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regl-render: swap n blit

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git-svn-id: svn://kolibrios.org@4498 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge) 2014-01-21 08:09:01 +00:00
parent 5e9c271f01
commit 05df377e5f
1 changed files with 386 additions and 201 deletions
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587
contrib/sdk/samples/Mesa/gl-render/main.c
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@ -14,28 +14,51 @@
#include <kos32sys.h> #include <kos32sys.h>
#include <pixlib2.h> #include <pixlib2.h>
enum px_buffer
{
PX_FRONT = 0,
PX_BACK = 1
};
struct render
{
EGLDisplay dpy;
EGLContext context;
GLuint framebuffer;
EGLImageKHR front, back, screen;
GLuint tx_buffers[2];
GLuint tx_screen;
int back_buffer;
GLuint blit_prog;
GLint sampler;
float vertices[8], texcoords[8];
};
EGLImageKHR px_create_image(EGLDisplay display, EGLContext context, EGLImageKHR px_create_image(EGLDisplay display, EGLContext context,
int width, int height, int stride, int name); int width, int height, int stride, int name);
GLuint create_framebuffer(int width, int height, GLuint *tex); GLuint create_framebuffer(int width, int height, GLuint *tex);
GLint create_shader(GLenum type, const char *source); GLint create_shader(GLenum type, const char *source);
struct render* create_render(EGLDisplay dpy, EGLSurface surface);
void blit_texture(struct render *render, GLuint tex, int x, int y, int w, int h);
void render_swap_buffers(struct render *render, int x, int y, int w, int h);
int main() int main()
{ {
struct gbm_device *gbm; struct gbm_device *gbm;
struct gbm_surface *gs; struct gbm_surface *gs;
struct render *render;
EGLDisplay dpy; EGLDisplay dpy;
EGLint major, minor; EGLint major, minor;
EGLContext context; EGLContext context;
EGLSurface surface; EGLSurface surface;
EGLImageKHR front,fb_image;
EGLConfig config; EGLConfig config;
EGLint config_attribs[32]; EGLint config_attribs[32];
EGLint num_configs, i; EGLint num_configs, i;
GLuint texture, buffer;
GLuint f_tex;
int fd; int fd;
@ -85,13 +108,10 @@ int main()
gs = gbm_surface_create(gbm, 400, 300, GBM_BO_FORMAT_ARGB8888, GBM_BO_USE_RENDERING); gs = gbm_surface_create(gbm, 400, 300, GBM_BO_FORMAT_ARGB8888, GBM_BO_USE_RENDERING);
BeginDraw(); BeginDraw();
DrawWindow(20, 20, 400+9, 300+24, "gl-render", 0x000000, 0x74); DrawWindow(20, 20, 400+9, 300+24, "gl-render", 0x000000, 0x74);
EndDraw(); EndDraw();
sna_create_mask();
surface = eglCreateWindowSurface(dpy,config, (EGLNativeWindowType)gs, NULL); surface = eglCreateWindowSurface(dpy,config, (EGLNativeWindowType)gs, NULL);
if (surface == EGL_NO_SURFACE) if (surface == EGL_NO_SURFACE)
printf("failed to create surface"); printf("failed to create surface");
@ -100,13 +120,6 @@ int main()
printf("failed to make window current"); printf("failed to make window current");
front = eglGetBufferImage(dpy, surface, EGL_DRM_BUFFER_BACK);
glGenTextures(1, &f_tex);
glBindTexture(GL_TEXTURE_2D, f_tex);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D,front);
glBindTexture(GL_TEXTURE_2D, 0);
glMatrixMode(GL_PROJECTION); glMatrixMode(GL_PROJECTION);
glLoadIdentity(); glLoadIdentity();
@ -134,191 +147,16 @@ int main()
glFlush(); glFlush();
glBindFramebuffer(GL_FRAMEBUFFER, 0); asm volatile ("int3");
if(fd) render = create_render(dpy, surface);
{ glViewport(0, 0, 1024, 768);
int ret;
GLenum status;
struct drm_i915_fb_info fb;
memset(&fb, 0, sizeof(fb));
ret = drmIoctl(fd, SRV_FBINFO, &fb);
if( ret != 0 )
printf("failed to get framebuffer info\n");
fb_image = px_create_image(dpy,context,fb.width,fb.height,
fb.pitch,fb.name);
printf("fb_image %p\n", fb_image);
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, texture);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D,fb_image);
glBindTexture(GL_TEXTURE_2D, 0);
glGenFramebuffers(1, &buffer);
glBindFramebuffer(GL_FRAMEBUFFER, buffer);
glFramebufferTexture2D(GL_FRAMEBUFFER,
GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D, texture,0);
status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if (status != GL_FRAMEBUFFER_COMPLETE)
{
const char *str;
switch (status)
{
case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
str = "incomplete attachment";
break;
case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
str = "incomplete/missing attachment";
break;
case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER:
str = "incomplete draw buffer";
break;
case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER:
str = "incomplete read buffer";
break;
case GL_FRAMEBUFFER_UNSUPPORTED:
str = "unsupported";
break;
case GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE:
str = "incomplete multiple";
break;
default:
str = "unknown error";
break;
}
printf("destination is framebuffer incomplete: %s [%#x]\n",
str, status);
}
}
glViewport(0, 0, 1024, 768);
glMatrixMode(GL_PROJECTION); glMatrixMode(GL_PROJECTION);
glLoadIdentity(); glLoadIdentity();
glMatrixMode(GL_MODELVIEW); glMatrixMode(GL_MODELVIEW);
glLoadIdentity(); glLoadIdentity();
render_swap_buffers(render, 20, 20, 400, 300);
const char *vs_src =
"attribute vec4 v_position;\n"
"attribute vec4 v_texcoord0;\n"
"varying vec2 source_texture;\n"
"void main()\n"
"{\n"
" gl_Position = v_position;\n"
" source_texture = v_texcoord0.xy;\n"
"}\n";
const char *fs_src =
// "precision mediump float;\n"
"varying vec2 source_texture;\n"
"uniform sampler2D sampler;\n"
"void main()\n"
"{\n"
" vec3 cg = texture2D(sampler, source_texture).rgb;\n"
" gl_FragColor = vec4(cg.r,cg.g,cg.b,1.0);\n"
"}\n";
GLuint blit_prog;
GLint vs_shader, fs_shader;
asm volatile ("int3");
blit_prog = glCreateProgram();
vs_shader = create_shader(GL_VERTEX_SHADER,vs_src);
fs_shader = create_shader(GL_FRAGMENT_SHADER, fs_src);
glAttachShader(blit_prog, vs_shader);
glAttachShader(blit_prog, fs_shader);
glBindAttribLocation(blit_prog, 0, "v_position");
glBindAttribLocation(blit_prog, 1, "v_texcoord0");
GLint ok;
glLinkProgram(blit_prog);
glGetProgramiv(blit_prog, GL_LINK_STATUS, &ok);
if (!ok) {
GLchar *info;
GLint size;
glGetProgramiv(blit_prog, GL_INFO_LOG_LENGTH, &size);
info = malloc(size);
glGetProgramInfoLog(blit_prog, size, NULL, info);
printf("Failed to link: %s\n", info);
printf("GLSL link failure\n");
}
GLint sampler;
float vertices[8], texcoords[8];
GLfloat dst_xscale, dst_yscale; //, src_xscale, src_yscale;
int l, t, r, b, stride;
sampler = glGetUniformLocation(blit_prog,"sampler");
glUseProgram(blit_prog);
glUniform1i(sampler, 0);
glVertexAttribPointer(0, 2, GL_FLOAT,GL_FALSE, 2 * sizeof(float),vertices);
glEnableVertexAttribArray(0);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, f_tex);
glTexParameteri(GL_TEXTURE_2D,
GL_TEXTURE_MIN_FILTER,
GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D,
GL_TEXTURE_MAG_FILTER,
GL_NEAREST);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(float),texcoords);
glEnableVertexAttribArray(1);
dst_xscale = 1.0/1024;
dst_yscale = 1.0/768;
// src_xscale = 1.0/400;
// src_yscale = 1.0/300;
stride = 2;
l = 20;
t = 20;
r = l+400;
b = t+300;
float t0, t1, t2, t5;
vertices[0] = t0 = 2*l*dst_xscale - 1.0;
vertices[1 * 2] = t2 = 2*r*dst_xscale - 1.0;
vertices[2 * 2] = t2;
vertices[3 * 2] = t0;
vertices[1] = t1 = 2*t*dst_yscale - 1.0;
vertices[2*2+1] = t5 = 2*b*dst_yscale - 1.0;
vertices[1*2+1] = t1;
vertices[3*2+1] = t5;
texcoords[0] = 0.0;
texcoords[1] = 0.0;
texcoords[1*2] = 1.0;
texcoords[1*2+1]= 0.0;
texcoords[2*2] = 1.0;
texcoords[2*2+1]= 1.0;
texcoords[3*2] = 0.0;
texcoords[3*2+1]= 1.0;
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
glDisableVertexAttribArray(0);
glDisableVertexAttribArray(1);
glDisable(GL_TEXTURE_2D);
glUseProgram(0);
glFinish(); glFinish();
eglMakeCurrent(dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); eglMakeCurrent(dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
@ -380,29 +218,375 @@ EGLImageKHR px_create_image(EGLDisplay display, EGLContext context,
GLint create_shader(GLenum type, const char *source) GLint create_shader(GLenum type, const char *source)
{ {
GLint ok; GLint ok;
GLint prog; GLint shader;
prog = glCreateShader(type); shader = glCreateShader(type);
glShaderSource(prog, 1, (const GLchar **) &source, NULL); if(shader == 0)
glCompileShader(prog); goto err;
glGetShaderiv(prog, GL_COMPILE_STATUS, &ok);
glShaderSource(shader, 1, (const GLchar **) &source, NULL);
glCompileShader(shader);
glGetShaderiv(shader, GL_COMPILE_STATUS, &ok);
if (!ok) { if (!ok) {
GLchar *info; GLchar *info;
GLint size; GLint size;
glGetShaderiv(prog, GL_INFO_LOG_LENGTH, &size); glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &size);
info = malloc(size); info = malloc(size);
glGetShaderInfoLog(prog, size, NULL, info); glGetShaderInfoLog(shader, size, NULL, info);
printf("Failed to compile %s: %s\n", printf("Failed to compile %s: %s\n",
type == GL_FRAGMENT_SHADER ? "FS" : "VS",info); type == GL_FRAGMENT_SHADER ? "FS" : "VS",info);
printf("Program source:\n%s", source); printf("Program source:\n%s", source);
printf("GLSL compile failure\n"); printf("GLSL compile failure\n");
free(info);
glDeleteProgram(shader);
shader = 0;
} }
err:
return prog; return shader;
} }
struct render* create_render(EGLDisplay dpy, EGLSurface surface)
{
const char *vs_src =
"attribute vec4 v_position;\n"
"attribute vec4 v_texcoord0;\n"
"varying vec2 source_texture;\n"
"void main()\n"
"{\n"
" gl_Position = v_position;\n"
" source_texture = v_texcoord0.xy;\n"
"}\n";
const char *fs_src =
// "precision mediump float;\n"
"varying vec2 source_texture;\n"
"uniform sampler2D sampler;\n"
"void main()\n"
"{\n"
" vec3 cg = texture2D(sampler, source_texture).rgb;\n"
" gl_FragColor = vec4(cg.r,cg.g,cg.b,1.0);\n"
"}\n";
EGLint config_attribs[14];
EGLConfig config;
EGLint num_configs;
EGLContext context;
struct drm_i915_fb_info fb;
GLint vs_shader, fs_shader;
GLenum status;
GLint ret;
int fd;
struct render *render;
fd = get_service("DISPLAY");
memset(&fb, 0, sizeof(fb));
ret = drmIoctl(fd, SRV_FBINFO, &fb);
if( ret != 0 )
{ printf("failed to get framebuffer info\n");
goto err;
};
render = (struct render*)malloc(sizeof(struct render));
if(render == NULL)
goto err;
render->dpy = dpy;
render->front = eglGetBufferImage(dpy, surface, EGL_DRM_BUFFER_FRONT);
if(render->front == EGL_NO_IMAGE_KHR)
goto err1;
render->back = eglGetBufferImage(dpy, surface, EGL_DRM_BUFFER_BACK);
if( render->back == EGL_NO_IMAGE_KHR)
goto err2;
glGenTextures(2, render->tx_buffers);
if(glGetError() != GL_NO_ERROR)
goto err3;
glBindTexture(GL_TEXTURE_2D, render->tx_buffers[EGL_DRM_BUFFER_FRONT]);
if(glGetError() != GL_NO_ERROR)
goto err4;
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D,render->front);
if(glGetError() != GL_NO_ERROR)
goto err4;
glBindTexture(GL_TEXTURE_2D, render->tx_buffers[EGL_DRM_BUFFER_BACK]);
if(glGetError() != GL_NO_ERROR)
goto err4;
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D,render->back);
if(glGetError() != GL_NO_ERROR)
goto err4;
glBindTexture(GL_TEXTURE_2D, 0);
render->back_buffer = EGL_DRM_BUFFER_BACK;
context = eglGetCurrentContext();
config_attribs[0] = EGL_RED_SIZE;
config_attribs[1] = 1;
config_attribs[2] = EGL_GREEN_SIZE;
config_attribs[3] = 1;
config_attribs[4] = EGL_BLUE_SIZE;
config_attribs[5] = 1;
config_attribs[6] = EGL_DEPTH_SIZE;
config_attribs[7] = 1;
config_attribs[8] = EGL_SURFACE_TYPE;
config_attribs[9] = EGL_WINDOW_BIT;
config_attribs[10] = EGL_RENDERABLE_TYPE;
config_attribs[11] = EGL_OPENGL_BIT;
config_attribs[12] = EGL_NONE;
if (!eglChooseConfig(dpy,config_attribs, &config, 1, &num_configs) || !num_configs)
{
printf("failed to choose a config");
goto err4;
}
render->context = eglCreateContext(dpy, config, EGL_NO_CONTEXT, NULL);
if (!context)
{
printf("failed to create context");
goto err4;
};
if (!eglMakeCurrent(dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, render->context))
{
printf("failed to make window current");
goto err5;
};
render->screen = px_create_image(dpy,context,fb.width,fb.height,
fb.pitch,fb.name);
if(render->screen == EGL_NO_IMAGE_KHR)
goto err6;
glGenTextures(1, &render->tx_screen);
if(glGetError() != GL_NO_ERROR)
goto err6;
glBindTexture(GL_TEXTURE_2D, render->tx_screen);
if(glGetError() != GL_NO_ERROR)
goto err7;
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D,render->screen);
if(glGetError() != GL_NO_ERROR)
goto err7;
glBindTexture(GL_TEXTURE_2D, 0);
glGenFramebuffers(1, &render->framebuffer);
if(glGetError() != GL_NO_ERROR)
goto err8;
glBindFramebuffer(GL_FRAMEBUFFER, render->framebuffer);
if(glGetError() != GL_NO_ERROR)
goto err9;
glFramebufferTexture2D(GL_FRAMEBUFFER,GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D, render->tx_screen,0);
status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if (status != GL_FRAMEBUFFER_COMPLETE)
{
const char *str;
switch (status)
{
case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
str = "incomplete attachment";
break;
case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
str = "incomplete/missing attachment";
break;
case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER:
str = "incomplete draw buffer";
break;
case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER:
str = "incomplete read buffer";
break;
case GL_FRAMEBUFFER_UNSUPPORTED:
str = "unsupported";
break;
case GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE:
str = "incomplete multiple";
break;
default:
str = "unknown error";
break;
}
printf("destination is framebuffer incomplete: %s [%#x]\n", str, status);
goto err9;
}
render->blit_prog = glCreateProgram();
if(render->blit_prog == 0)
goto err9;
vs_shader = create_shader(GL_VERTEX_SHADER,vs_src);
if(vs_shader == 0)
goto err10;
fs_shader = create_shader(GL_FRAGMENT_SHADER, fs_src);
if(fs_shader == 0)
goto err11;
glAttachShader(render->blit_prog, vs_shader);
glAttachShader(render->blit_prog, fs_shader);
glBindAttribLocation(render->blit_prog, 0, "v_position");
glBindAttribLocation(render->blit_prog, 1, "v_texcoord0");
glLinkProgram(render->blit_prog);
glGetProgramiv(render->blit_prog, GL_LINK_STATUS, &ret);
if (!ret)
{
GLchar *info;
GLint size;
glGetProgramiv(render->blit_prog, GL_INFO_LOG_LENGTH, &size);
info = malloc(size);
glGetProgramInfoLog(render->blit_prog, size, NULL, info);
printf("Failed to link: %s\n", info);
printf("GLSL link failure\n");
free(info);
}
render->sampler = glGetUniformLocation(render->blit_prog,"sampler");
eglMakeCurrent(dpy, surface, surface, context);
return render;
err11:
glDeleteShader(vs_shader);
err10:
glDeleteProgram(render->blit_prog);
err9:
glDeleteFramebuffers(1, &render->framebuffer);
err8:
eglDestroyImageKHR(dpy, render->screen);
err7:
glDeleteTextures(1, &render->tx_screen);
err6:
eglMakeCurrent(dpy, surface, surface, context);
err5:
eglDestroyContext(dpy, render->context);
err4:
glDeleteTextures(2, render->tx_buffers);
err3:
eglDestroyImageKHR(dpy, render->back);
err2:
eglDestroyImageKHR(dpy, render->front);
err1:
free(render);
err:
return NULL;
};
void render_swap_buffers(struct render *render, int x, int y, int w, int h)
{
EGLContext context;
EGLSurface draw, read;
float dst_xscale, dst_yscale;
float *vertices = render->vertices;
float *texcoords = render->texcoords;
int r, b;
if(render == NULL)
return;
context = eglGetCurrentContext();
draw = eglGetCurrentSurface(EGL_DRAW);
read = eglGetCurrentSurface(EGL_READ);
eglSwapBuffers(render->dpy,draw);
if (!eglMakeCurrent(render->dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, render->context))
{
printf("failed to make window current");
goto err1;
};
glUseProgram(render->blit_prog);
glUniform1i(render->sampler, 0);
glVertexAttribPointer(0, 2, GL_FLOAT,GL_FALSE, 2 * sizeof(float),render->vertices);
glEnableVertexAttribArray(0);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, render->tx_buffers[render->back_buffer]);
glTexParameteri(GL_TEXTURE_2D,
GL_TEXTURE_MIN_FILTER,
GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D,
GL_TEXTURE_MAG_FILTER,
GL_NEAREST);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(float),render->texcoords);
glEnableVertexAttribArray(1);
dst_xscale = 1.0/1024;
dst_yscale = 1.0/768;
r = x+w-1;
b = y+h-1;
float t0, t1, t2, t5;
vertices[0] = t0 = 2*x*dst_xscale - 1.0;
vertices[1 * 2] = t2 = 2*r*dst_xscale - 1.0;
vertices[2 * 2] = t2;
vertices[3 * 2] = t0;
vertices[1] = t1 = 2*y*dst_yscale - 1.0;
vertices[2*2+1] = t5 = 2*b*dst_yscale - 1.0;
vertices[1*2+1] = t1;
vertices[3*2+1] = t5;
texcoords[0] = 0.0;
texcoords[1] = 0.0;
texcoords[1*2] = 1.0;
texcoords[1*2+1]= 0.0;
texcoords[2*2] = 1.0;
texcoords[2*2+1]= 1.0;
texcoords[3*2] = 0.0;
texcoords[3*2+1]= 1.0;
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
glDisableVertexAttribArray(0);
glDisableVertexAttribArray(1);
glDisable(GL_TEXTURE_2D);
glUseProgram(0);
render->back_buffer++;
render->back_buffer&=1;
err1:
eglMakeCurrent(render->dpy, draw, read, context);
}
#if 0
GLuint create_framebuffer(int width, int height, GLuint *tex) GLuint create_framebuffer(int width, int height, GLuint *tex)
{ {
GLuint buffer; GLuint buffer;
@ -423,3 +607,4 @@ GLuint create_framebuffer(int width, int height, GLuint *tex)
GL_TEXTURE_2D, *tex,0); GL_TEXTURE_2D, *tex,0);
return buffer; return buffer;
} }
#endif