Stefan Dösinger : wined3d: Not all cards support float16 filtering.
Module: wine Branch: master Commit: c6d3e754821b9b1d21c09e2df915d4415fe028fc URL: http://source.winehq.org/git/wine.git/?a=commit;h=c6d3e754821b9b1d21c09e2df9... Author: Stefan Dösinger <stefan(a)codeweavers.com> Date: Wed Aug 5 22:12:10 2009 +0200 wined3d: Not all cards support float16 filtering. --- dlls/wined3d/utils.c | 181 ++++++++++++++++++++++++++++++++++++++++++++++++-- 1 files changed, 176 insertions(+), 5 deletions(-) diff --git a/dlls/wined3d/utils.c b/dlls/wined3d/utils.c index 71587c1..07a0794 100644 --- a/dlls/wined3d/utils.c +++ b/dlls/wined3d/utils.c @@ -273,23 +273,23 @@ static const GlPixelFormatDescTemplate gl_formats_template[] = { /* Float */ {WINED3DFMT_R16_FLOAT, GL_RGB16F_ARB, GL_RGB16F_ARB, 0, GL_RED, GL_HALF_FLOAT_ARB, - WINED3DFMT_FLAG_FILTERING | WINED3DFMT_FLAG_RENDERTARGET, + WINED3DFMT_FLAG_RENDERTARGET, ARB_TEXTURE_FLOAT}, {WINED3DFMT_R16_FLOAT, GL_R16F, GL_R16F, 0, GL_RED, GL_HALF_FLOAT_ARB, - WINED3DFMT_FLAG_FILTERING | WINED3DFMT_FLAG_RENDERTARGET, + WINED3DFMT_FLAG_RENDERTARGET, ARB_TEXTURE_RG}, {WINED3DFMT_R16G16_FLOAT, GL_RGB16F_ARB, GL_RGB16F_ARB, 0, GL_RGB, GL_HALF_FLOAT_ARB, - WINED3DFMT_FLAG_FILTERING | WINED3DFMT_FLAG_RENDERTARGET, + WINED3DFMT_FLAG_RENDERTARGET, ARB_TEXTURE_FLOAT}, {WINED3DFMT_R16G16_FLOAT, GL_RG16F, GL_RG16F, 0, GL_RG, GL_HALF_FLOAT_ARB, - WINED3DFMT_FLAG_FILTERING | WINED3DFMT_FLAG_RENDERTARGET, + WINED3DFMT_FLAG_RENDERTARGET, ARB_TEXTURE_RG}, {WINED3DFMT_R16G16B16A16_FLOAT, GL_RGBA16F_ARB, GL_RGBA16F_ARB, 0, GL_RGBA, GL_HALF_FLOAT_ARB, - WINED3DFMT_FLAG_POSTPIXELSHADER_BLENDING | WINED3DFMT_FLAG_FILTERING | WINED3DFMT_FLAG_RENDERTARGET, + WINED3DFMT_FLAG_POSTPIXELSHADER_BLENDING | WINED3DFMT_FLAG_RENDERTARGET, ARB_TEXTURE_FLOAT}, /* Palettized formats */ {WINED3DFMT_P8, GL_RGBA, GL_RGBA, 0, @@ -770,6 +770,176 @@ static BOOL init_format_texture_info(struct wined3d_gl_info *gl_info) return TRUE; } +static BOOL color_match(DWORD c1, DWORD c2, BYTE max_diff) +{ + if (abs((c1 & 0xff) - (c2 & 0xff)) > max_diff) return FALSE; + c1 >>= 8; c2 >>= 8; + if (abs((c1 & 0xff) - (c2 & 0xff)) > max_diff) return FALSE; + c1 >>= 8; c2 >>= 8; + if (abs((c1 & 0xff) - (c2 & 0xff)) > max_diff) return FALSE; + c1 >>= 8; c2 >>= 8; + if (abs((c1 & 0xff) - (c2 & 0xff)) > max_diff) return FALSE; + return TRUE; +} + +/* A context is provided by the caller */ +static BOOL check_filter(const struct wined3d_gl_info *gl_info, GLenum internal) +{ + GLuint tex, fbo, buffer; + const DWORD data[] = {0x00000000, 0xffffffff}; + DWORD readback[16 * 1]; + BOOL ret = FALSE; + + /* Render a filtered texture and see what happens. This is intended to detect the lack of + * float16 filtering on ATI X1000 class cards. The drivers disable filtering instead of + * falling back to software. If this changes in the future this code will get fooled and + * apps might hit the software path due to incorrectly advertised caps. + * + * Its unlikely that this changes however. GL Games like Mass Effect depend on the filter + * disable fallback, if Apple or ATI ever change the driver behavior they will break more + * than Wine. The Linux binary <= r500 driver is not maintained any more anyway + */ + + ENTER_GL(); + while(glGetError()); + + glGenTextures(1, &buffer); + glBindTexture(GL_TEXTURE_2D, buffer); + memset(readback, 0x7e, sizeof(readback)); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 16, 1, 0, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, readback); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE); + + glGenTextures(1, &tex); + glBindTexture(GL_TEXTURE_2D, tex); + glTexImage2D(GL_TEXTURE_2D, 0, internal, 2, 1, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, data); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE); + glEnable(GL_TEXTURE_2D); + + GL_EXTCALL(glGenFramebuffersEXT(1, &fbo)); + GL_EXTCALL(glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo)); + GL_EXTCALL(glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, buffer, 0)); + glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT); + + glViewport(0, 0, 16, 1); + glDisable(GL_LIGHTING); + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + + glClearColor(0, 1, 0, 0); + glClear(GL_COLOR_BUFFER_BIT); + + glBegin(GL_TRIANGLE_STRIP); + glTexCoord2f(0.0, 0.0); + glVertex2f(-1.0f, -1.0f); + glTexCoord2f(1.0, 0.0); + glVertex2f(1.0f, -1.0f); + glTexCoord2f(0.0, 1.0); + glVertex2f(-1.0f, 1.0f); + glTexCoord2f(1.0, 1.0); + glVertex2f(1.0f, 1.0f); + glEnd(); + + glBindTexture(GL_TEXTURE_2D, buffer); + memset(readback, 0x7f, sizeof(readback)); + glGetTexImage(GL_TEXTURE_2D, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, readback); + if(color_match(readback[6], 0xffffffff, 5) || color_match(readback[6], 0x00000000, 5) || + color_match(readback[9], 0xffffffff, 5) || color_match(readback[9], 0x00000000, 5)) + { + TRACE("Read back colors 0x%08x and 0x%08x close to unfiltered color, asuming no filtering\n", + readback[6], readback[9]); + ret = FALSE; + } + else + { + TRACE("Read back colors are 0x%08x and 0x%08x, assuming texture is filtered\n", + readback[6], readback[9]); + ret = TRUE; + } + + GL_EXTCALL(glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0)); + GL_EXTCALL(glDeleteFramebuffersEXT(1, &fbo)); + glDeleteTextures(1, &tex); + glDeleteTextures(1, &buffer); + + if(glGetError()) + { + FIXME("Error during filtering test for format %x, returning no filtering\n", internal); + ret = FALSE; + } + LEAVE_GL(); + return ret; +} + +static void init_format_filter_info(struct wined3d_gl_info *gl_info) +{ + unsigned int fmt_idx, i; + WINED3DFORMAT fmts16[] = { + WINED3DFMT_R16_FLOAT, + WINED3DFMT_R16G16_FLOAT, + WINED3DFMT_R16G16B16A16_FLOAT, + }; + BOOL filtered; + struct GlPixelFormatDesc *desc; + + if(wined3d_settings.offscreen_rendering_mode != ORM_FBO) + { + WARN("No FBO support, or no FBO ORM, guessing filter info from GL caps\n"); + if(gl_info->gl_vendor == VENDOR_NVIDIA && GL_SUPPORT(ARB_TEXTURE_FLOAT)) + { + TRACE("Nvidia card with texture_float support: Assuming float16 blending\n"); + filtered = TRUE; + } + else if(GL_LIMITS(glsl_varyings > 44)) + { + TRACE("More than 44 GLSL varyings - assuming d3d10 card with float16 blending\n"); + filtered = TRUE; + } + else + { + TRACE("Assuming no float16 blending\n"); + filtered = FALSE; + } + + if(filtered) + { + for(i = 0; i < (sizeof(fmts16) / sizeof(*fmts16)); i++) + { + fmt_idx = getFmtIdx(fmts16[i]); + gl_info->gl_formats[fmt_idx].Flags |= WINED3DFMT_FLAG_FILTERING; + } + } + return; + } + + for(i = 0; i < (sizeof(fmts16) / sizeof(*fmts16)); i++) + { + fmt_idx = getFmtIdx(fmts16[i]); + desc = &gl_info->gl_formats[fmt_idx]; + if(!desc->glInternal) continue; /* Not supported by GL */ + + filtered = check_filter(gl_info, gl_info->gl_formats[fmt_idx].glInternal); + if(filtered) + { + TRACE("Format %s supports filtering\n", debug_d3dformat(fmts16[i])); + desc->Flags |= WINED3DFMT_FLAG_FILTERING; + } + else + { + TRACE("Format %s does not support filtering\n", debug_d3dformat(fmts16[i])); + } + } +} + static void apply_format_fixups(struct wined3d_gl_info *gl_info) { int idx; @@ -942,6 +1112,7 @@ BOOL initPixelFormats(struct wined3d_gl_info *gl_info) apply_format_fixups(gl_info); init_format_fbo_compat_info(gl_info); + init_format_filter_info(gl_info); return TRUE;
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Alexandre Julliard