Mesa (master): r300: add support for EXT_texture_sRGB

[Maciej Cencora]

Module: Mesa
Branch: master
Commit: 41091087396f935d4acf70b018ba54889fcf55a1
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=41091087396f935d4acf70b018ba54889fcf55a1

Author: Maciej Cencora <m.cencora at gmail.com>
Date:   Fri Jun 12 19:08:44 2009 +0200

r300: add support for EXT_texture_sRGB

Tested with glean/texture_srgb and wine/d3d9 tests on RV535

---

 src/mesa/drivers/dri/r300/r300_context.c     |    1 +
 src/mesa/drivers/dri/r300/r300_reg.h         |    2 ++
 src/mesa/drivers/dri/r300/r300_texstate.c    |    4 ++++
 src/mesa/drivers/dri/radeon/radeon_texture.c |   20 ++++++++++++++++++++
 4 files changed, 27 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/dri/r300/r300_context.c b/src/mesa/drivers/dri/r300/r300_context.c
index 394521a..76881e4 100644
--- a/src/mesa/drivers/dri/r300/r300_context.c
+++ b/src/mesa/drivers/dri/r300/r300_context.c
@@ -124,6 +124,7 @@ const struct dri_extension card_extensions[] = {
   {"GL_EXT_texture_lod_bias",		NULL},
   {"GL_EXT_texture_mirror_clamp",	NULL},
   {"GL_EXT_texture_rectangle",		NULL},
+  {"GL_EXT_texture_sRGB",		NULL},
   {"GL_EXT_vertex_array_bgra",		NULL},
   {"GL_ATI_separate_stencil",		GL_ATI_separate_stencil_functions},
   {"GL_ATI_texture_env_combine3",	NULL},
diff --git a/src/mesa/drivers/dri/r300/r300_reg.h b/src/mesa/drivers/dri/r300/r300_reg.h
index c22616b..357c600 100644
--- a/src/mesa/drivers/dri/r300/r300_reg.h
+++ b/src/mesa/drivers/dri/r300/r300_reg.h
@@ -1467,6 +1467,8 @@ USE OR OTHER DEALINGS IN THE SOFTWARE.
 #	define R300_TX_FORMAT_3D		   (1 << 25)
 #	define R300_TX_FORMAT_CUBIC_MAP		   (2 << 25)
 
+#	define R300_TX_FORMAT_GAMMA			(1 << 21)
+
 	/* gap */
 	/* Floating point formats */
 	/* Note - hardware supports both 16 and 32 bit floating point */
diff --git a/src/mesa/drivers/dri/r300/r300_texstate.c b/src/mesa/drivers/dri/r300/r300_texstate.c
index 6d6a90a..6e47321 100644
--- a/src/mesa/drivers/dri/r300/r300_texstate.c
+++ b/src/mesa/drivers/dri/r300/r300_texstate.c
@@ -119,6 +119,10 @@ static const struct tx_table {
 	_ASSIGN(Z24_S8, R300_EASY_TX_FORMAT(X, X, X, X, X24_Y8)),
 	_ASSIGN(S8_Z24, R300_EASY_TX_FORMAT(Y, Y, Y, Y, X24_Y8)),
 	_ASSIGN(Z32, R300_EASY_TX_FORMAT(X, X, X, X, X32)),
+	/* EXT_texture_sRGB */
+	_ASSIGN(SRGBA8, R300_EASY_TX_FORMAT(Y, Z, W, X, W8Z8Y8X8) | R300_TX_FORMAT_GAMMA),
+	_ASSIGN(SLA8, R300_EASY_TX_FORMAT(X, X, X, Y, Y8X8) | R300_TX_FORMAT_GAMMA),
+	_ASSIGN(SL8, R300_EASY_TX_FORMAT(X, X, X, ONE, X8) | R300_TX_FORMAT_GAMMA),
 	/* *INDENT-ON* */
 };
 
diff --git a/src/mesa/drivers/dri/radeon/radeon_texture.c b/src/mesa/drivers/dri/radeon/radeon_texture.c
index 0d87f15..3fc750c 100644
--- a/src/mesa/drivers/dri/radeon/radeon_texture.c
+++ b/src/mesa/drivers/dri/radeon/radeon_texture.c
@@ -477,6 +477,26 @@ const struct gl_texture_format *radeonChooseTextureFormat(GLcontext * ctx,
 	case GL_DEPTH_STENCIL_EXT:
 	case GL_DEPTH24_STENCIL8_EXT:
 		return &_mesa_texformat_s8_z24;
+
+	/* EXT_texture_sRGB */
+	case GL_SRGB:
+	case GL_SRGB8:
+	case GL_SRGB_ALPHA:
+	case GL_SRGB8_ALPHA8:
+	case GL_COMPRESSED_SRGB:
+	case GL_COMPRESSED_SRGB_ALPHA:
+		return &_mesa_texformat_srgba8;
+
+	case GL_SLUMINANCE:
+	case GL_SLUMINANCE8:
+	case GL_COMPRESSED_SLUMINANCE:
+		return &_mesa_texformat_sl8;
+
+	case GL_SLUMINANCE_ALPHA:
+	case GL_SLUMINANCE8_ALPHA8:
+	case GL_COMPRESSED_SLUMINANCE_ALPHA:
+		return &_mesa_texformat_sla8;
+
 	default:
 		_mesa_problem(ctx,
 			      "unexpected internalFormat 0x%x in %s",