532 lines
19 KiB
C
532 lines
19 KiB
C
/**************************************************************************
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*
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* Copyright 2009 Marek Olšák <maraeo@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#ifndef U_BLITTER_H
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#define U_BLITTER_H
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#include "util/u_framebuffer.h"
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#include "util/u_inlines.h"
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#include "pipe/p_state.h"
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/* u_memory.h conflicts with st/mesa */
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#ifndef Elements
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#define Elements(x) (sizeof(x)/sizeof((x)[0]))
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct pipe_context;
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enum blitter_attrib_type {
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UTIL_BLITTER_ATTRIB_NONE,
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UTIL_BLITTER_ATTRIB_COLOR,
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UTIL_BLITTER_ATTRIB_TEXCOORD
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};
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struct blitter_context
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{
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/**
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* Draw a rectangle.
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*
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* \param x1 An X coordinate of the top-left corner.
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* \param y1 A Y coordinate of the top-left corner.
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* \param x2 An X coordinate of the bottom-right corner.
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* \param y2 A Y coordinate of the bottom-right corner.
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* \param depth A depth which the rectangle is rendered at.
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*
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* \param type Semantics of the attributes "attrib".
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* If type is UTIL_BLITTER_ATTRIB_NONE, ignore them.
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* If type is UTIL_BLITTER_ATTRIB_COLOR, the attributes
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* make up a constant RGBA color, and should go
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* to the GENERIC0 varying slot of a fragment shader.
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* If type is UTIL_BLITTER_ATTRIB_TEXCOORD, {a1, a2} and
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* {a3, a4} specify top-left and bottom-right texture
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* coordinates of the rectangle, respectively, and should go
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* to the GENERIC0 varying slot of a fragment shader.
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*
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* \param attrib See type.
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*
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* \note A driver may optionally override this callback to implement
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* a specialized hardware path for drawing a rectangle, e.g. using
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* a rectangular point sprite.
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*/
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void (*draw_rectangle)(struct blitter_context *blitter,
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int x1, int y1, int x2, int y2,
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float depth,
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enum blitter_attrib_type type,
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const union pipe_color_union *color);
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/**
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* Get the next surface layer for the pipe surface, i.e. make a copy
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* of the surface and increment the first and last layer by 1.
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*
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* This callback is exposed, so that drivers can override it if needed.
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*/
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struct pipe_surface *(*get_next_surface_layer)(struct pipe_context *pipe,
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struct pipe_surface *surf);
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/* Whether the blitter is running. */
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boolean running;
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/* Private members, really. */
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struct pipe_context *pipe; /**< pipe context */
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void *saved_blend_state; /**< blend state */
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void *saved_dsa_state; /**< depth stencil alpha state */
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void *saved_velem_state; /**< vertex elements state */
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void *saved_rs_state; /**< rasterizer state */
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void *saved_fs, *saved_vs, *saved_gs; /**< shaders */
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struct pipe_framebuffer_state saved_fb_state; /**< framebuffer state */
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struct pipe_stencil_ref saved_stencil_ref; /**< stencil ref */
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struct pipe_viewport_state saved_viewport;
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struct pipe_scissor_state saved_scissor;
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boolean is_sample_mask_saved;
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unsigned saved_sample_mask;
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unsigned saved_num_sampler_states;
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void *saved_sampler_states[PIPE_MAX_SAMPLERS];
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unsigned saved_num_sampler_views;
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struct pipe_sampler_view *saved_sampler_views[PIPE_MAX_SAMPLERS];
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unsigned vb_slot;
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struct pipe_vertex_buffer saved_vertex_buffer;
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unsigned saved_num_so_targets;
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struct pipe_stream_output_target *saved_so_targets[PIPE_MAX_SO_BUFFERS];
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struct pipe_query *saved_render_cond_query;
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uint saved_render_cond_mode;
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boolean saved_render_cond_cond;
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};
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/**
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* Create a blitter context.
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*/
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struct blitter_context *util_blitter_create(struct pipe_context *pipe);
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/**
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* Destroy a blitter context.
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*/
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void util_blitter_destroy(struct blitter_context *blitter);
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void util_blitter_cache_all_shaders(struct blitter_context *blitter);
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/**
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* Return the pipe context associated with a blitter context.
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*/
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static INLINE
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struct pipe_context *util_blitter_get_pipe(struct blitter_context *blitter)
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{
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return blitter->pipe;
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}
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/**
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* Override PIPE_CAP_TEXTURE_MULTISAMPLE as reported by the driver.
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*/
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void util_blitter_set_texture_multisample(struct blitter_context *blitter,
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boolean supported);
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/* The default function to draw a rectangle. This can only be used
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* inside of the draw_rectangle callback if the driver overrides it. */
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void util_blitter_draw_rectangle(struct blitter_context *blitter,
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int x1, int y1, int x2, int y2, float depth,
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enum blitter_attrib_type type,
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const union pipe_color_union *attrib);
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/*
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* These states must be saved before any of the following functions are called:
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* - vertex buffers
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* - vertex elements
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* - vertex shader
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* - geometry shader (if supported)
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* - stream output targets (if supported)
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* - rasterizer state
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*/
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/**
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* Clear a specified set of currently bound buffers to specified values.
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*
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* These states must be saved in the blitter in addition to the state objects
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* already required to be saved:
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* - fragment shader
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* - depth stencil alpha state
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* - blend state
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*/
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void util_blitter_clear(struct blitter_context *blitter,
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unsigned width, unsigned height,
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unsigned clear_buffers,
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const union pipe_color_union *color,
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double depth, unsigned stencil);
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/**
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* Check if the blitter (with the help of the driver) can blit between
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* the two resources.
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* The mask is a combination of the PIPE_MASK_* flags.
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* Set to PIPE_MASK_RGBAZS if unsure.
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*/
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boolean util_blitter_is_copy_supported(struct blitter_context *blitter,
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const struct pipe_resource *dst,
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const struct pipe_resource *src,
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unsigned mask);
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boolean util_blitter_is_blit_supported(struct blitter_context *blitter,
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const struct pipe_blit_info *info);
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/**
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* Copy a block of pixels from one surface to another.
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*
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* These states must be saved in the blitter in addition to the state objects
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* already required to be saved:
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* - fragment shader
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* - depth stencil alpha state
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* - blend state
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* - fragment sampler states
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* - fragment sampler textures
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* - framebuffer state
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* - sample mask
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*/
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void util_blitter_copy_texture(struct blitter_context *blitter,
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struct pipe_resource *dst,
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unsigned dst_level,
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unsigned dstx, unsigned dsty, unsigned dstz,
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struct pipe_resource *src,
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unsigned src_level,
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const struct pipe_box *srcbox, unsigned mask,
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boolean copy_all_samples);
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/**
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* This is a generic implementation of pipe->blit, which accepts
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* sampler/surface views instead of resources.
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*
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* The layer and mipmap level are specified by the views.
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*
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* Drivers can use this to change resource properties (like format, width,
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* height) by changing how the views interpret them, instead of changing
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* pipe_resource directly. This is used to blit resources of formats which
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* are not renderable.
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*
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* src_width0 and src_height0 are sampler_view-private properties that
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* override pipe_resource. The blitter uses them for computation of texture
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* coordinates. The dst dimensions are supplied through pipe_surface::width
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* and height.
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*
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* The mask is a combination of the PIPE_MASK_* flags.
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* Set to PIPE_MASK_RGBAZS if unsure.
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*/
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void util_blitter_blit_generic(struct blitter_context *blitter,
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struct pipe_surface *dst,
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const struct pipe_box *dstbox,
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struct pipe_sampler_view *src,
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const struct pipe_box *srcbox,
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unsigned src_width0, unsigned src_height0,
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unsigned mask, unsigned filter,
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const struct pipe_scissor_state *scissor,
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boolean copy_all_samples);
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void util_blitter_blit(struct blitter_context *blitter,
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const struct pipe_blit_info *info);
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/**
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* Helper function to initialize a view for copy_texture_view.
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* The parameters must match copy_texture_view.
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*/
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void util_blitter_default_dst_texture(struct pipe_surface *dst_templ,
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struct pipe_resource *dst,
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unsigned dstlevel,
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unsigned dstz);
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/**
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* Helper function to initialize a view for copy_texture_view.
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* The parameters must match copy_texture_view.
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*/
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void util_blitter_default_src_texture(struct pipe_sampler_view *src_templ,
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struct pipe_resource *src,
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unsigned srclevel);
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/**
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* Copy data from one buffer to another using the Stream Output functionality.
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* 4-byte alignment is required, otherwise software fallback is used.
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*/
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void util_blitter_copy_buffer(struct blitter_context *blitter,
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struct pipe_resource *dst,
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unsigned dstx,
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struct pipe_resource *src,
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unsigned srcx,
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unsigned size);
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/**
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* Clear the contents of a buffer using the Stream Output functionality.
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* 4-byte alignment is required.
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*
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* "num_channels" can be 1, 2, 3, or 4, and specifies if the clear value is
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* R, RG, RGB, or RGBA.
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*
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* For each element, only "num_channels" components of "clear_value" are
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* copied to the buffer, then the offset is incremented by num_channels*4.
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*/
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void util_blitter_clear_buffer(struct blitter_context *blitter,
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struct pipe_resource *dst,
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unsigned offset, unsigned size,
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unsigned num_channels,
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const union pipe_color_union *clear_value);
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/**
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* Clear a region of a (color) surface to a constant value.
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*
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* These states must be saved in the blitter in addition to the state objects
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* already required to be saved:
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* - fragment shader
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* - depth stencil alpha state
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* - blend state
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* - framebuffer state
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*/
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void util_blitter_clear_render_target(struct blitter_context *blitter,
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struct pipe_surface *dst,
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const union pipe_color_union *color,
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unsigned dstx, unsigned dsty,
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unsigned width, unsigned height);
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/**
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* Clear a region of a depth-stencil surface, both stencil and depth
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* or only one of them if this is a combined depth-stencil surface.
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*
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* These states must be saved in the blitter in addition to the state objects
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* already required to be saved:
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* - fragment shader
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* - depth stencil alpha state
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* - blend state
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* - framebuffer state
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*/
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void util_blitter_clear_depth_stencil(struct blitter_context *blitter,
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struct pipe_surface *dst,
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unsigned clear_flags,
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double depth,
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unsigned stencil,
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unsigned dstx, unsigned dsty,
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unsigned width, unsigned height);
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/* The following functions are customized variants of the clear functions.
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* Some drivers use them internally to do things like MSAA resolve
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* and resource decompression. It usually consists of rendering a full-screen
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* quad with a special blend or DSA state.
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*/
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/* Used by r300g for depth decompression. */
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void util_blitter_custom_clear_depth(struct blitter_context *blitter,
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unsigned width, unsigned height,
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double depth, void *custom_dsa);
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/* Used by r600g for depth decompression. */
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void util_blitter_custom_depth_stencil(struct blitter_context *blitter,
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struct pipe_surface *zsurf,
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struct pipe_surface *cbsurf,
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unsigned sample_mask,
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void *dsa_stage, float depth);
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/* Used by r600g for color decompression. */
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void util_blitter_custom_color(struct blitter_context *blitter,
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struct pipe_surface *dstsurf,
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void *custom_blend);
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/* Used by r600g for MSAA color resolve. */
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void util_blitter_custom_resolve_color(struct blitter_context *blitter,
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struct pipe_resource *dst,
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unsigned dst_level,
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unsigned dst_layer,
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struct pipe_resource *src,
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unsigned src_layer,
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unsigned sampled_mask,
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void *custom_blend,
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enum pipe_format format);
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/* The functions below should be used to save currently bound constant state
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* objects inside a driver. The objects are automatically restored at the end
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* of the util_blitter_{clear, copy_region, fill_region} functions and then
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* forgotten.
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*
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* States not listed here are not affected by util_blitter. */
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static INLINE
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void util_blitter_save_blend(struct blitter_context *blitter,
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void *state)
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{
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blitter->saved_blend_state = state;
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}
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static INLINE
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void util_blitter_save_depth_stencil_alpha(struct blitter_context *blitter,
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void *state)
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{
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blitter->saved_dsa_state = state;
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}
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static INLINE
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void util_blitter_save_vertex_elements(struct blitter_context *blitter,
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void *state)
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{
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blitter->saved_velem_state = state;
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}
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static INLINE
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void util_blitter_save_stencil_ref(struct blitter_context *blitter,
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const struct pipe_stencil_ref *state)
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{
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blitter->saved_stencil_ref = *state;
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}
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static INLINE
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void util_blitter_save_rasterizer(struct blitter_context *blitter,
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void *state)
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{
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blitter->saved_rs_state = state;
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}
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static INLINE
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void util_blitter_save_fragment_shader(struct blitter_context *blitter,
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void *fs)
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{
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blitter->saved_fs = fs;
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}
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static INLINE
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void util_blitter_save_vertex_shader(struct blitter_context *blitter,
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void *vs)
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{
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blitter->saved_vs = vs;
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}
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static INLINE
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void util_blitter_save_geometry_shader(struct blitter_context *blitter,
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void *gs)
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{
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blitter->saved_gs = gs;
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}
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static INLINE
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void util_blitter_save_framebuffer(struct blitter_context *blitter,
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const struct pipe_framebuffer_state *state)
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{
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blitter->saved_fb_state.nr_cbufs = 0; /* It's ~0 now, meaning it's unsaved. */
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util_copy_framebuffer_state(&blitter->saved_fb_state, state);
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}
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static INLINE
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void util_blitter_save_viewport(struct blitter_context *blitter,
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struct pipe_viewport_state *state)
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{
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blitter->saved_viewport = *state;
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}
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static INLINE
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void util_blitter_save_scissor(struct blitter_context *blitter,
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struct pipe_scissor_state *state)
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{
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blitter->saved_scissor = *state;
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}
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static INLINE
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void util_blitter_save_fragment_sampler_states(
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struct blitter_context *blitter,
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unsigned num_sampler_states,
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void **sampler_states)
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{
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assert(num_sampler_states <= Elements(blitter->saved_sampler_states));
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blitter->saved_num_sampler_states = num_sampler_states;
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memcpy(blitter->saved_sampler_states, sampler_states,
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num_sampler_states * sizeof(void *));
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}
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static INLINE void
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util_blitter_save_fragment_sampler_views(struct blitter_context *blitter,
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unsigned num_views,
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struct pipe_sampler_view **views)
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{
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unsigned i;
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assert(num_views <= Elements(blitter->saved_sampler_views));
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blitter->saved_num_sampler_views = num_views;
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for (i = 0; i < num_views; i++)
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pipe_sampler_view_reference(&blitter->saved_sampler_views[i],
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views[i]);
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}
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static INLINE void
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util_blitter_save_vertex_buffer_slot(struct blitter_context *blitter,
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struct pipe_vertex_buffer *vertex_buffers)
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{
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pipe_resource_reference(&blitter->saved_vertex_buffer.buffer,
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vertex_buffers[blitter->vb_slot].buffer);
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memcpy(&blitter->saved_vertex_buffer, &vertex_buffers[blitter->vb_slot],
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sizeof(struct pipe_vertex_buffer));
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}
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static INLINE void
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util_blitter_save_so_targets(struct blitter_context *blitter,
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unsigned num_targets,
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struct pipe_stream_output_target **targets)
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{
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unsigned i;
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assert(num_targets <= Elements(blitter->saved_so_targets));
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blitter->saved_num_so_targets = num_targets;
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for (i = 0; i < num_targets; i++)
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pipe_so_target_reference(&blitter->saved_so_targets[i],
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targets[i]);
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}
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static INLINE void
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util_blitter_save_sample_mask(struct blitter_context *blitter,
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unsigned sample_mask)
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{
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blitter->is_sample_mask_saved = TRUE;
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blitter->saved_sample_mask = sample_mask;
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}
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static INLINE void
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util_blitter_save_render_condition(struct blitter_context *blitter,
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struct pipe_query *query,
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boolean condition,
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uint mode)
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{
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blitter->saved_render_cond_query = query;
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blitter->saved_render_cond_mode = mode;
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blitter->saved_render_cond_cond = condition;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
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