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authorEric Anholt <eric@anholt.net>2007-11-07 10:04:59 -0800
committerEric Anholt <eric@anholt.net>2007-11-09 14:27:33 -0800
commit77a5bcaff43df8d54e0e0ef833726e4b41d7eb36 (patch)
tree0be8b19b347af2425a211a29c680fed266fa91c8 /src/mesa/drivers/dri/intel/intel_tex_format.c
parent8b36166d295beb472ed7cedf1989894665233b98 (diff)
[intel] Move over files that will be shared with 965-fbo work.
Diffstat (limited to 'src/mesa/drivers/dri/intel/intel_tex_format.c')
-rw-r--r--src/mesa/drivers/dri/intel/intel_tex_format.c172
1 files changed, 172 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_tex_format.c b/src/mesa/drivers/dri/intel/intel_tex_format.c
new file mode 100644
index 00000000000..6e058dff69f
--- /dev/null
+++ b/src/mesa/drivers/dri/intel/intel_tex_format.c
@@ -0,0 +1,172 @@
+#include "intel_context.h"
+#include "intel_tex.h"
+#include "texformat.h"
+#include "enums.h"
+
+/* 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...
+ */
+const struct gl_texture_format *
+intelChooseTextureFormat(GLcontext * ctx, GLint internalFormat,
+ GLenum format, GLenum type)
+{
+ struct intel_context *intel = intel_context(ctx);
+ const GLboolean do32bpt = (intel->intelScreen->cpp == 4);
+
+ 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;
+
+ 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;
+
+ case GL_RGBA8:
+ case GL_RGB10_A2:
+ case GL_RGBA12:
+ case GL_RGBA16:
+ return do32bpt ? &_mesa_texformat_argb8888 : &_mesa_texformat_argb4444;
+
+ case GL_RGBA4:
+ case GL_RGBA2:
+ return &_mesa_texformat_argb4444;
+
+ case GL_RGB5_A1:
+ return &_mesa_texformat_argb1555;
+
+ case GL_RGB8:
+ case GL_RGB10:
+ case GL_RGB12:
+ case GL_RGB16:
+ return &_mesa_texformat_argb8888;
+
+ case GL_RGB5:
+ case GL_RGB4:
+ case GL_R3_G3_B2:
+ return &_mesa_texformat_rgb565;
+
+ case GL_ALPHA:
+ case GL_ALPHA4:
+ case GL_ALPHA8:
+ case GL_ALPHA12:
+ case GL_ALPHA16:
+ case GL_COMPRESSED_ALPHA:
+ return &_mesa_texformat_a8;
+
+ case 1:
+ case GL_LUMINANCE:
+ case GL_LUMINANCE4:
+ case GL_LUMINANCE8:
+ case GL_LUMINANCE12:
+ case GL_LUMINANCE16:
+ case GL_COMPRESSED_LUMINANCE:
+ return &_mesa_texformat_l8;
+
+ 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;
+
+ case GL_INTENSITY:
+ case GL_INTENSITY4:
+ case GL_INTENSITY8:
+ case GL_INTENSITY12:
+ case GL_INTENSITY16:
+ case GL_COMPRESSED_INTENSITY:
+ return &_mesa_texformat_i8;
+
+ case GL_YCBCR_MESA:
+ if (type == GL_UNSIGNED_SHORT_8_8_MESA || type == GL_UNSIGNED_BYTE)
+ return &_mesa_texformat_ycbcr;
+ else
+ return &_mesa_texformat_ycbcr_rev;
+
+ case GL_COMPRESSED_RGB_FXT1_3DFX:
+ return &_mesa_texformat_rgb_fxt1;
+ case GL_COMPRESSED_RGBA_FXT1_3DFX:
+ return &_mesa_texformat_rgba_fxt1;
+
+ case GL_RGB_S3TC:
+ case GL_RGB4_S3TC:
+ case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
+ return &_mesa_texformat_rgb_dxt1;
+
+ case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
+ return &_mesa_texformat_rgba_dxt1;
+
+ case GL_RGBA_S3TC:
+ case GL_RGBA4_S3TC:
+ case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
+ return &_mesa_texformat_rgba_dxt3;
+
+ case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
+ return &_mesa_texformat_rgba_dxt5;
+
+ case GL_DEPTH_COMPONENT:
+ case GL_DEPTH_COMPONENT16:
+ case GL_DEPTH_COMPONENT24:
+ case GL_DEPTH_COMPONENT32:
+ return &_mesa_texformat_z16;
+
+ case GL_DEPTH_STENCIL_EXT:
+ case GL_DEPTH24_STENCIL8_EXT:
+ return &_mesa_texformat_z24_s8;
+
+ default:
+ fprintf(stderr, "unexpected texture format %s in %s\n",
+ _mesa_lookup_enum_by_nr(internalFormat), __FUNCTION__);
+ return NULL;
+ }
+
+ return NULL; /* 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;
+}