| #include "intel_context.h" |
| #include "intel_tex.h" |
| #include "intel_chipset.h" |
| #include "main/enums.h" |
| |
| |
| /** |
| * Choose hardware texture format given the user's glTexImage parameters. |
| * |
| * It works out that this function is fine for all the supported |
| * hardware. However, there is still a need to map the formats onto |
| * hardware descriptors. |
| * |
| * Note that the i915 can actually support many more formats than |
| * these if we take the step of simply swizzling the colors |
| * immediately after sampling... |
| */ |
| gl_format |
| intelChooseTextureFormat(GLcontext * ctx, GLint internalFormat, |
| GLenum format, GLenum type) |
| { |
| struct intel_context *intel = intel_context(ctx); |
| const GLboolean do32bpt = (intel->ctx.Visual.rgbBits >= 24); |
| |
| #if 0 |
| printf("%s intFmt=0x%x format=0x%x type=0x%x\n", |
| __FUNCTION__, internalFormat, format, type); |
| #endif |
| |
| switch (internalFormat) { |
| case 4: |
| case GL_RGBA: |
| case GL_COMPRESSED_RGBA: |
| if (format == GL_BGRA) { |
| if (type == GL_UNSIGNED_BYTE || type == GL_UNSIGNED_INT_8_8_8_8_REV) { |
| return MESA_FORMAT_ARGB8888; |
| } |
| else if (type == GL_UNSIGNED_SHORT_4_4_4_4_REV) { |
| return MESA_FORMAT_ARGB4444; |
| } |
| else if (type == GL_UNSIGNED_SHORT_1_5_5_5_REV) { |
| return MESA_FORMAT_ARGB1555; |
| } |
| } |
| return do32bpt ? MESA_FORMAT_ARGB8888 : MESA_FORMAT_ARGB4444; |
| |
| case 3: |
| case GL_RGB: |
| case GL_COMPRESSED_RGB: |
| if (format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5) { |
| return MESA_FORMAT_RGB565; |
| } |
| return do32bpt ? MESA_FORMAT_XRGB8888 : MESA_FORMAT_RGB565; |
| |
| case GL_RGBA8: |
| case GL_RGB10_A2: |
| case GL_RGBA12: |
| case GL_RGBA16: |
| return do32bpt ? MESA_FORMAT_ARGB8888 : MESA_FORMAT_ARGB4444; |
| |
| case GL_RGBA4: |
| case GL_RGBA2: |
| return MESA_FORMAT_ARGB4444; |
| |
| case GL_RGB5_A1: |
| return MESA_FORMAT_ARGB1555; |
| |
| case GL_RGB8: |
| case GL_RGB10: |
| case GL_RGB12: |
| case GL_RGB16: |
| return MESA_FORMAT_XRGB8888; |
| |
| case GL_RGB5: |
| case GL_RGB4: |
| case GL_R3_G3_B2: |
| return MESA_FORMAT_RGB565; |
| |
| case GL_ALPHA: |
| case GL_ALPHA4: |
| case GL_ALPHA8: |
| case GL_ALPHA12: |
| case GL_ALPHA16: |
| case GL_COMPRESSED_ALPHA: |
| return MESA_FORMAT_A8; |
| |
| case 1: |
| case GL_LUMINANCE: |
| case GL_LUMINANCE4: |
| case GL_LUMINANCE8: |
| case GL_LUMINANCE12: |
| case GL_LUMINANCE16: |
| case GL_COMPRESSED_LUMINANCE: |
| return MESA_FORMAT_L8; |
| |
| case GL_LUMINANCE12_ALPHA4: |
| case GL_LUMINANCE12_ALPHA12: |
| case GL_LUMINANCE16_ALPHA16: |
| #ifndef I915 |
| return MESA_FORMAT_AL1616; |
| #else |
| /* FALLTHROUGH */ |
| #endif |
| |
| case 2: |
| case GL_LUMINANCE_ALPHA: |
| case GL_LUMINANCE4_ALPHA4: |
| case GL_LUMINANCE6_ALPHA2: |
| case GL_LUMINANCE8_ALPHA8: |
| case GL_COMPRESSED_LUMINANCE_ALPHA: |
| return MESA_FORMAT_AL88; |
| |
| case GL_INTENSITY: |
| case GL_INTENSITY4: |
| case GL_INTENSITY8: |
| case GL_INTENSITY12: |
| case GL_INTENSITY16: |
| case GL_COMPRESSED_INTENSITY: |
| return MESA_FORMAT_I8; |
| |
| case GL_YCBCR_MESA: |
| if (type == GL_UNSIGNED_SHORT_8_8_MESA || type == GL_UNSIGNED_BYTE) |
| return MESA_FORMAT_YCBCR; |
| else |
| return MESA_FORMAT_YCBCR_REV; |
| |
| case GL_COMPRESSED_RGB_FXT1_3DFX: |
| return MESA_FORMAT_RGB_FXT1; |
| case GL_COMPRESSED_RGBA_FXT1_3DFX: |
| return MESA_FORMAT_RGBA_FXT1; |
| |
| case GL_RGB_S3TC: |
| case GL_RGB4_S3TC: |
| case GL_COMPRESSED_RGB_S3TC_DXT1_EXT: |
| return MESA_FORMAT_RGB_DXT1; |
| |
| case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: |
| return MESA_FORMAT_RGBA_DXT1; |
| |
| case GL_RGBA_S3TC: |
| case GL_RGBA4_S3TC: |
| case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT: |
| return MESA_FORMAT_RGBA_DXT3; |
| |
| case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: |
| return MESA_FORMAT_RGBA_DXT5; |
| |
| case GL_DEPTH_COMPONENT: |
| case GL_DEPTH_COMPONENT16: |
| case GL_DEPTH_COMPONENT24: |
| case GL_DEPTH_COMPONENT32: |
| #if 0 |
| return MESA_FORMAT_Z16; |
| #else |
| /* fall-through. |
| * 16bpp depth texture can't be paired with a stencil buffer so |
| * always used combined depth/stencil format. |
| */ |
| #endif |
| case GL_DEPTH_STENCIL_EXT: |
| case GL_DEPTH24_STENCIL8_EXT: |
| return MESA_FORMAT_S8_Z24; |
| |
| #ifndef I915 |
| case GL_SRGB_EXT: |
| case GL_SRGB8_EXT: |
| case GL_SRGB_ALPHA_EXT: |
| case GL_SRGB8_ALPHA8_EXT: |
| case GL_COMPRESSED_SRGB_EXT: |
| case GL_COMPRESSED_SRGB_ALPHA_EXT: |
| case GL_COMPRESSED_SLUMINANCE_EXT: |
| case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT: |
| return MESA_FORMAT_SARGB8; |
| case GL_SLUMINANCE_EXT: |
| case GL_SLUMINANCE8_EXT: |
| if (intel->has_luminance_srgb) |
| return MESA_FORMAT_SL8; |
| else |
| return MESA_FORMAT_SARGB8; |
| case GL_SLUMINANCE_ALPHA_EXT: |
| case GL_SLUMINANCE8_ALPHA8_EXT: |
| if (intel->has_luminance_srgb) |
| return MESA_FORMAT_SLA8; |
| else |
| return MESA_FORMAT_SARGB8; |
| case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT: |
| case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT: |
| case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT: |
| case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT: |
| return MESA_FORMAT_SRGB_DXT1; |
| |
| /* i915 could also do this */ |
| case GL_DUDV_ATI: |
| case GL_DU8DV8_ATI: |
| return MESA_FORMAT_DUDV8; |
| case GL_RGBA_SNORM: |
| case GL_RGBA8_SNORM: |
| return MESA_FORMAT_SIGNED_RGBA8888_REV; |
| #endif |
| |
| default: |
| fprintf(stderr, "unexpected texture format %s in %s\n", |
| _mesa_lookup_enum_by_nr(internalFormat), __FUNCTION__); |
| return MESA_FORMAT_NONE; |
| } |
| |
| return MESA_FORMAT_NONE; /* never get here */ |
| } |
| |
| int intel_compressed_num_bytes(GLuint mesaFormat) |
| { |
| int bytes = 0; |
| switch(mesaFormat) { |
| |
| case MESA_FORMAT_RGB_FXT1: |
| case MESA_FORMAT_RGBA_FXT1: |
| case MESA_FORMAT_RGB_DXT1: |
| case MESA_FORMAT_RGBA_DXT1: |
| bytes = 2; |
| break; |
| |
| case MESA_FORMAT_RGBA_DXT3: |
| case MESA_FORMAT_RGBA_DXT5: |
| bytes = 4; |
| default: |
| break; |
| } |
| |
| return bytes; |
| } |