diff options
Diffstat (limited to 'opengl.c')
| -rw-r--r-- | opengl.c | 202 |
1 files changed, 137 insertions, 65 deletions
@@ -197,23 +197,41 @@ glx_init_blur(session_t *ps) { { static const char *FRAG_SHADER_BLUR_PREFIX = "#version 110\n" + "%s" "uniform float offset_x;\n" "uniform float offset_y;\n" "uniform float factor_center;\n" - "uniform sampler2D tex_scr;\n" + "uniform %s tex_scr;\n" "\n" "void main() {\n" " vec4 sum = vec4(0.0, 0.0, 0.0, 0.0);\n"; static const char *FRAG_SHADER_BLUR_ADD = - " sum += float(%.7g) * texture2D(tex_scr, vec2(gl_TexCoord[0].x + offset_x * float(%d), gl_TexCoord[0].y + offset_y * float(%d)));\n"; + " sum += float(%.7g) * %s(tex_scr, vec2(gl_TexCoord[0].x + offset_x * float(%d), gl_TexCoord[0].y + offset_y * float(%d)));\n"; + static const char *FRAG_SHADER_BLUR_ADD_GPUSHADER4 = + " sum += float(%.7g) * %sOffset(tex_scr, vec2(gl_TexCoord[0].x, gl_TexCoord[0].y), ivec2(%d, %d));\n"; static const char *FRAG_SHADER_BLUR_SUFFIX = - " sum += texture2D(tex_scr, vec2(gl_TexCoord[0].x, gl_TexCoord[0].y)) * factor_center;\n" + " sum += %s(tex_scr, vec2(gl_TexCoord[0].x, gl_TexCoord[0].y)) * factor_center;\n" " gl_FragColor = sum / (factor_center + float(%.7g));\n" "}\n"; - int wid = XFixedToDouble(ps->o.blur_kern[0]), hei = XFixedToDouble(ps->o.blur_kern[1]); + + const bool use_texture_rect = !ps->glx_has_texture_non_power_of_two; + const char *sampler_type = (use_texture_rect ? + "sampler2DRect": "sampler2D"); + const char *texture_func = (use_texture_rect ? + "texture2DRect": "texture2D"); + const char *shader_add = FRAG_SHADER_BLUR_ADD; + char *extension = mstrcpy(""); + if (use_texture_rect) + mstrextend(&extension, "#extension GL_ARB_texture_rectangle : require\n"); + if (ps->o.glx_use_gpushader4) { + mstrextend(&extension, "#extension GL_EXT_gpu_shader4 : require\n"); + shader_add = FRAG_SHADER_BLUR_ADD_GPUSHADER4; + } + + int wid = XFixedToDouble(ps->o.blur_kern[0]), + hei = XFixedToDouble(ps->o.blur_kern[1]); int nele = wid * hei - 1; - int len = strlen(FRAG_SHADER_BLUR_PREFIX) + (strlen(FRAG_SHADER_BLUR_ADD) + 42) * nele - + strlen(FRAG_SHADER_BLUR_SUFFIX) + 12 + 1; + int len = strlen(FRAG_SHADER_BLUR_PREFIX) + strlen(sampler_type) + strlen(extension) + (strlen(shader_add) + strlen(texture_func) + 42) * nele + strlen(FRAG_SHADER_BLUR_SUFFIX) + strlen(texture_func) + 12 + 1; char *shader_str = calloc(len, sizeof(char)); if (!shader_str) { printf_errf("(): Failed to allocate %d bytes for shader string.", len); @@ -221,8 +239,8 @@ glx_init_blur(session_t *ps) { } { char *pc = shader_str; - strcpy(pc, FRAG_SHADER_BLUR_PREFIX); - pc += strlen(FRAG_SHADER_BLUR_PREFIX); + sprintf(pc, FRAG_SHADER_BLUR_PREFIX, extension, sampler_type); + pc += strlen(pc); assert(strlen(shader_str) < len); double sum = 0.0; @@ -232,13 +250,13 @@ glx_init_blur(session_t *ps) { continue; double val = XFixedToDouble(ps->o.blur_kern[2 + i * wid + j]); sum += val; - sprintf(pc, FRAG_SHADER_BLUR_ADD, val, j - wid / 2, i - hei / 2); + sprintf(pc, shader_add, val, texture_func, j - wid / 2, i - hei / 2); pc += strlen(pc); assert(strlen(shader_str) < len); } } - sprintf(pc, FRAG_SHADER_BLUR_SUFFIX, sum); + sprintf(pc, FRAG_SHADER_BLUR_SUFFIX, texture_func, sum); assert(strlen(shader_str) < len); #ifdef DEBUG_GLX_GLSL fputs(shader_str, stdout); @@ -246,6 +264,7 @@ glx_init_blur(session_t *ps) { #endif } ps->glx_frag_shader_blur = glx_create_shader(GL_FRAGMENT_SHADER, shader_str); + free(extension); free(shader_str); } @@ -268,8 +287,10 @@ glx_init_blur(session_t *ps) { } P_GET_UNIFM_LOC("factor_center", glx_prog_blur_unifm_factor_center); - P_GET_UNIFM_LOC("offset_x", glx_prog_blur_unifm_offset_x); - P_GET_UNIFM_LOC("offset_y", glx_prog_blur_unifm_offset_y); + if (!ps->o.glx_use_gpushader4) { + P_GET_UNIFM_LOC("offset_x", glx_prog_blur_unifm_offset_x); + P_GET_UNIFM_LOC("offset_y", glx_prog_blur_unifm_offset_y); + } #undef P_GET_UNIFM_LOC @@ -593,24 +614,8 @@ glx_paint_pre(session_t *ps, XserverRegion *preg) { // glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Get buffer age - int buffer_age = ps->o.glx_swap_method; bool trace_damage = (ps->o.glx_swap_method < 0 || ps->o.glx_swap_method > 1); - // Query GLX_EXT_buffer_age for buffer age - if (SWAPM_BUFFER_AGE == buffer_age) { - unsigned val = 0; - glXQueryDrawable(ps->dpy, get_tgt_window(ps), - GLX_BACK_BUFFER_AGE_EXT, &val); - buffer_age = val; - } - - // Buffer age too high - if (buffer_age > CGLX_MAX_BUFFER_AGE + 1) - buffer_age = 0; - - // Make sure buffer age >= 0 - buffer_age = max_i(buffer_age, 0); - // Trace raw damage regions XserverRegion newdamage = None; if (trace_damage && *preg) @@ -619,37 +624,89 @@ glx_paint_pre(session_t *ps, XserverRegion *preg) { // OpenGL doesn't support partial repaint without GLX_MESA_copy_sub_buffer, // we could redraw the whole screen or copy unmodified pixels from // front buffer with --glx-copy-from-front. - if (ps->o.glx_use_copysubbuffermesa || 1 == buffer_age || !*preg) { - } - else if (buffer_age > 1) { - for (int i = 0; i < buffer_age - 1; ++i) { - XserverRegion dmg = ps->all_damage_last[i]; - if (!dmg) { - free_region(ps, preg); - break; - } - XFixesUnionRegion(ps->dpy, *preg, *preg, dmg); - } - } - else if (!ps->o.glx_copy_from_front) { - free_region(ps, preg); + if (ps->o.glx_use_copysubbuffermesa || !*preg) { } else { + int buffer_age = ps->o.glx_swap_method; + + // Getting buffer age { - XserverRegion reg_copy = XFixesCreateRegion(ps->dpy, NULL, 0); - XFixesSubtractRegion(ps->dpy, reg_copy, ps->screen_reg, *preg); - glx_set_clip(ps, reg_copy, NULL); - free_region(ps, ®_copy); + // Query GLX_EXT_buffer_age for buffer age + if (SWAPM_BUFFER_AGE == buffer_age) { + unsigned val = 0; + glXQueryDrawable(ps->dpy, get_tgt_window(ps), + GLX_BACK_BUFFER_AGE_EXT, &val); + buffer_age = val; + } + + // Buffer age too high + if (buffer_age > CGLX_MAX_BUFFER_AGE + 1) + buffer_age = 0; + + // Make sure buffer age >= 0 + buffer_age = max_i(buffer_age, 0); + + // Check if we have we have empty regions + if (buffer_age > 1) { + for (int i = 0; i < buffer_age - 1; ++i) + if (!ps->all_damage_last[i]) { buffer_age = 0; break; } + } } - { - GLfloat raster_pos[4]; - glGetFloatv(GL_CURRENT_RASTER_POSITION, raster_pos); - glReadBuffer(GL_FRONT); - glRasterPos2f(0.0, 0.0); - glCopyPixels(0, 0, ps->root_width, ps->root_height, GL_COLOR); - glReadBuffer(GL_BACK); - glRasterPos4fv(raster_pos); + // Do nothing for buffer_age 1 (copy) + if (1 != buffer_age) { + // Copy pixels + if (ps->o.glx_copy_from_front) { + // Determine copy area + XserverRegion reg_copy = XFixesCreateRegion(ps->dpy, NULL, 0); + if (!buffer_age) { + XFixesSubtractRegion(ps->dpy, reg_copy, ps->screen_reg, *preg); + } + else { + for (int i = 0; i < buffer_age - 1; ++i) + XFixesUnionRegion(ps->dpy, reg_copy, reg_copy, + ps->all_damage_last[i]); + XFixesSubtractRegion(ps->dpy, reg_copy, reg_copy, *preg); + } + + // Actually copy pixels + { + GLfloat raster_pos[4]; + GLfloat curx = 0.0f, cury = 0.0f; + glGetFloatv(GL_CURRENT_RASTER_POSITION, raster_pos); + glReadBuffer(GL_FRONT); + glRasterPos2f(0.0, 0.0); + { + int nrects = 0; + XRectangle *rects = XFixesFetchRegion(ps->dpy, reg_copy, &nrects); + for (int i = 0; i < nrects; ++i) { + const int x = rects[i].x; + const int y = ps->root_height - rects[i].y - rects[i].height; + // Kwin patch says glRasterPos2f() causes artifacts on bottom + // screen edge with some drivers + glBitmap(0, 0, 0, 0, x - curx, y - cury, NULL); + curx = x; + cury = y; + glCopyPixels(x, y, rects[i].width, rects[i].height, GL_COLOR); + } + cxfree(rects); + } + glReadBuffer(GL_BACK); + glRasterPos4fv(raster_pos); + } + + free_region(ps, ®_copy); + } + + // Determine paint area + if (ps->o.glx_copy_from_front) { } + else if (buffer_age) { + for (int i = 0; i < buffer_age - 1; ++i) + XFixesUnionRegion(ps->dpy, *preg, *preg, ps->all_damage_last[i]); + } + else { + free_region(ps, preg); + } } } @@ -819,13 +876,20 @@ glx_blur_dst(session_t *ps, int dx, int dy, int width, int height, float z, glTexParameteri(tex_tgt, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexParameteri(tex_tgt, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); glTexParameteri(tex_tgt, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); - glTexImage2D(tex_tgt, 0, GL_RGB, mwidth, mheight, 0, GL_BGRA, GL_UNSIGNED_BYTE, NULL); + glTexImage2D(tex_tgt, 0, GL_RGB, mwidth, mheight, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL); glCopyTexSubImage2D(tex_tgt, 0, 0, 0, mdx, ps->root_height - mdy - mheight, mwidth, mheight); #ifdef DEBUG_GLX printf_dbgf("(): %d, %d, %d, %d\n", mdx, ps->root_height - mdy - mheight, mwidth, mheight); #endif + // Texture scaling factor + GLfloat texfac_x = 1.0f, texfac_y = 1.0f; + if (GL_TEXTURE_2D == tex_tgt) { + texfac_x /= mwidth; + texfac_y /= mheight; + } + // Paint it back // Color negation for testing... // glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE); @@ -836,9 +900,9 @@ glx_blur_dst(session_t *ps, int dx, int dy, int width, int height, float z, #ifdef CONFIG_VSYNC_OPENGL_GLSL glUseProgram(ps->glx_prog_blur); if (ps->glx_prog_blur_unifm_offset_x >= 0) - glUniform1f(ps->glx_prog_blur_unifm_offset_x, 1.0f / mwidth); + glUniform1f(ps->glx_prog_blur_unifm_offset_x, texfac_x); if (ps->glx_prog_blur_unifm_offset_y >= 0) - glUniform1f(ps->glx_prog_blur_unifm_offset_y, 1.0f / mheight); + glUniform1f(ps->glx_prog_blur_unifm_offset_y, texfac_y); if (ps->glx_prog_blur_unifm_factor_center >= 0) glUniform1f(ps->glx_prog_blur_unifm_factor_center, factor_center); #endif @@ -846,10 +910,10 @@ glx_blur_dst(session_t *ps, int dx, int dy, int width, int height, float z, { P_PAINTREG_START(); { - const GLfloat rx = (double) (crect.x - mdx) / mwidth; - const GLfloat ry = 1.0 - (double) (crect.y - mdy) / mheight; - const GLfloat rxe = rx + (double) crect.width / mwidth; - const GLfloat rye = ry - (double) crect.height / mheight; + const GLfloat rx = (crect.x - mdx) * texfac_x; + const GLfloat ry = (mheight - (crect.y - mdy)) * texfac_y; + const GLfloat rxe = rx + crect.width * texfac_x; + const GLfloat rye = ry - crect.height * texfac_y; const GLfloat rdx = crect.x; const GLfloat rdy = ps->root_height - crect.y; const GLfloat rdxe = rdx + crect.width; @@ -1049,10 +1113,18 @@ glx_render(session_t *ps, const glx_texture_t *ptex, { P_PAINTREG_START(); { - GLfloat rx = (double) (crect.x - dx + x) / ptex->width; - GLfloat ry = (double) (crect.y - dy + y) / ptex->height; - GLfloat rxe = rx + (double) crect.width / ptex->width; - GLfloat rye = ry + (double) crect.height / ptex->height; + GLfloat rx = (double) (crect.x - dx + x); + GLfloat ry = (double) (crect.y - dy + y); + GLfloat rxe = rx + (double) crect.width; + GLfloat rye = ry + (double) crect.height; + // Rectangle textures have [0-w] [0-h] while 2D texture has [0-1] [0-1] + // Thanks to amonakov for pointing out! + if (GL_TEXTURE_2D == ptex->target) { + rx = rx / ptex->width; + ry = ry / ptex->height; + rxe = rxe / ptex->width; + rye = rye / ptex->height; + } GLint rdx = crect.x; GLint rdy = ps->root_height - crect.y; GLint rdxe = rdx + crect.width; |