#include "intel_context.h"
#include "intel_tex.h"
-#include "main/texformat.h"
#include "main/enums.h"
+#include "main/formats.h"
-/* It works out that this function is fine for all the supported
+/**
+ * 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
+ *
+ * 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...
*/
-const struct gl_texture_format *
-intelChooseTextureFormat(GLcontext * ctx, GLint internalFormat,
+gl_format
+intelChooseTextureFormat(struct gl_context * ctx, GLint internalFormat,
GLenum format, GLenum type)
{
struct intel_context *intel = intel_context(ctx);
- const GLboolean do32bpt = (intel->ctx.Visual.rgbBits == 32);
+
+#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_texformat_argb8888;
- }
- else if (type == GL_UNSIGNED_SHORT_4_4_4_4_REV) {
- return &_mesa_texformat_argb4444;
- }
- else if (type == GL_UNSIGNED_SHORT_1_5_5_5_REV) {
- return &_mesa_texformat_argb1555;
- }
- }
- return do32bpt ? &_mesa_texformat_argb8888 : &_mesa_texformat_argb4444;
+ 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;
+ else
+ return MESA_FORMAT_ARGB8888;
case 3:
case GL_RGB:
case GL_COMPRESSED_RGB:
- if (format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5) {
- return &_mesa_texformat_rgb565;
- }
- return do32bpt ? &_mesa_texformat_argb8888 : &_mesa_texformat_rgb565;
+ if (type == GL_UNSIGNED_SHORT_5_6_5)
+ return MESA_FORMAT_RGB565;
+ else if (intel->has_xrgb_textures)
+ return MESA_FORMAT_XRGB8888;
+ else
+ return MESA_FORMAT_ARGB8888;
case GL_RGBA8:
case GL_RGB10_A2:
case GL_RGBA12:
case GL_RGBA16:
- return do32bpt ? &_mesa_texformat_argb8888 : &_mesa_texformat_argb4444;
+ return MESA_FORMAT_ARGB8888;
case GL_RGBA4:
case GL_RGBA2:
- return &_mesa_texformat_argb4444;
+ return MESA_FORMAT_ARGB4444;
case GL_RGB5_A1:
- return &_mesa_texformat_argb1555;
+ return MESA_FORMAT_ARGB1555;
case GL_RGB8:
case GL_RGB10:
case GL_RGB12:
case GL_RGB16:
- return &_mesa_texformat_argb8888;
+ if (intel->has_xrgb_textures)
+ return MESA_FORMAT_XRGB8888;
+ else
+ return MESA_FORMAT_ARGB8888;
case GL_RGB5:
case GL_RGB4:
case GL_R3_G3_B2:
- return &_mesa_texformat_rgb565;
+ return MESA_FORMAT_RGB565;
case GL_ALPHA:
case GL_ALPHA4:
case GL_ALPHA12:
case GL_ALPHA16:
case GL_COMPRESSED_ALPHA:
- return &_mesa_texformat_a8;
+ return MESA_FORMAT_A8;
case 1:
case GL_LUMINANCE:
case GL_LUMINANCE12:
case GL_LUMINANCE16:
case GL_COMPRESSED_LUMINANCE:
- return &_mesa_texformat_l8;
+ return MESA_FORMAT_L8;
+
+ case GL_LUMINANCE12_ALPHA4:
+ case GL_LUMINANCE12_ALPHA12:
+ case GL_LUMINANCE16_ALPHA16:
+ /* i915 could implement this mode using MT_32BIT_RG1616. However, this
+ * would require an extra swizzle instruction in the fragment shader to
+ * convert the { R, G, 1.0, 1.0 } to { R, R, R, G }.
+ */
+#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_LUMINANCE12_ALPHA4:
- case GL_LUMINANCE12_ALPHA12:
- case GL_LUMINANCE16_ALPHA16:
case GL_COMPRESSED_LUMINANCE_ALPHA:
- return &_mesa_texformat_al88;
+ return MESA_FORMAT_AL88;
case GL_INTENSITY:
case GL_INTENSITY4:
case GL_INTENSITY12:
case GL_INTENSITY16:
case GL_COMPRESSED_INTENSITY:
- return &_mesa_texformat_i8;
+ return MESA_FORMAT_I8;
case GL_YCBCR_MESA:
if (type == GL_UNSIGNED_SHORT_8_8_MESA || type == GL_UNSIGNED_BYTE)
- return &_mesa_texformat_ycbcr;
+ return MESA_FORMAT_YCBCR;
else
- return &_mesa_texformat_ycbcr_rev;
+ return MESA_FORMAT_YCBCR_REV;
case GL_COMPRESSED_RGB_FXT1_3DFX:
- return &_mesa_texformat_rgb_fxt1;
+ return MESA_FORMAT_RGB_FXT1;
case GL_COMPRESSED_RGBA_FXT1_3DFX:
- return &_mesa_texformat_rgba_fxt1;
+ return MESA_FORMAT_RGBA_FXT1;
case GL_RGB_S3TC:
case GL_RGB4_S3TC:
case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
- return &_mesa_texformat_rgb_dxt1;
+ return MESA_FORMAT_RGB_DXT1;
case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
- return &_mesa_texformat_rgba_dxt1;
+ return MESA_FORMAT_RGBA_DXT1;
case GL_RGBA_S3TC:
case GL_RGBA4_S3TC:
case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
- return &_mesa_texformat_rgba_dxt3;
+ return MESA_FORMAT_RGBA_DXT3;
case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
- return &_mesa_texformat_rgba_dxt5;
+ return MESA_FORMAT_RGBA_DXT5;
case GL_DEPTH_COMPONENT:
case GL_DEPTH_COMPONENT16:
case GL_DEPTH_COMPONENT24:
case GL_DEPTH_COMPONENT32:
- return &_mesa_texformat_z16;
-
+#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_texformat_s8_z24;
+ 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_SLUMINANCE_EXT:
- case GL_SLUMINANCE8_EXT:
- case GL_SLUMINANCE_ALPHA_EXT:
- case GL_SLUMINANCE8_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_texformat_srgba8;
+ 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_texformat_srgb_dxt1;
+ 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;
+
+ /* i915 can do a RG16, but it can't do any of the other RED or RG formats.
+ * In addition, it only implements the broken D3D mode where undefined
+ * components are read as 1.0. I'm not sure who thought reading
+ * { R, G, 1.0, 1.0 } from a red-green texture would be useful.
+ */
+ case GL_RED:
+ case GL_R8:
+ return MESA_FORMAT_R8;
+ case GL_R16:
+ return MESA_FORMAT_R16;
+ case GL_RG:
+ case GL_RG8:
+ return MESA_FORMAT_RG88;
+ case GL_RG16:
+ return MESA_FORMAT_RG1616;
#endif
default:
fprintf(stderr, "unexpected texture format %s in %s\n",
_mesa_lookup_enum_by_nr(internalFormat), __FUNCTION__);
- return NULL;
+ return MESA_FORMAT_NONE;
}
- return NULL; /* never get here */
+ 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;
+ GLuint bw, bh;
+ GLuint block_size;
+
+ block_size = _mesa_get_format_bytes(mesaFormat);
+ _mesa_get_format_block_size(mesaFormat, &bw, &bh);
+
+ return block_size / bw;
}
projects / mesa.git / blobdiff