[Mesa-dev] [PATCH 2/6] mesa: add R/RG floating-point formats
Marek Olšák
maraeo at gmail.com
Fri Apr 1 06:57:00 PDT 2011
---
src/mesa/main/formats.c | 40 ++++++++++++++++
src/mesa/main/formats.h | 4 ++
src/mesa/main/texfetch.c | 28 +++++++++++
src/mesa/main/texfetch_tmp.h | 104 ++++++++++++++++++++++++++++++++++++++++++
src/mesa/main/texformat.c | 16 ++++++
src/mesa/main/texstore.c | 20 ++++++--
6 files changed, 208 insertions(+), 4 deletions(-)
diff --git a/src/mesa/main/formats.c b/src/mesa/main/formats.c
index b45cf03..4c31ccb 100644
--- a/src/mesa/main/formats.c
+++ b/src/mesa/main/formats.c
@@ -728,6 +728,42 @@ static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
0, 16, 0, 0, 0,
1, 1, 2
},
+ {
+ MESA_FORMAT_R_FLOAT32,
+ "MESA_FORMAT_R_FLOAT32",
+ GL_RED,
+ GL_FLOAT,
+ 32, 0, 0, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 4
+ },
+ {
+ MESA_FORMAT_R_FLOAT16,
+ "MESA_FORMAT_R_FLOAT16",
+ GL_RED,
+ GL_FLOAT,
+ 16, 0, 0, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 2
+ },
+ {
+ MESA_FORMAT_RG_FLOAT32,
+ "MESA_FORMAT_RG_FLOAT32",
+ GL_RG,
+ GL_FLOAT,
+ 32, 32, 0, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 8
+ },
+ {
+ MESA_FORMAT_RG_FLOAT16,
+ "MESA_FORMAT_RG_FLOAT16",
+ GL_RG,
+ GL_FLOAT,
+ 16, 16, 0, 0,
+ 0, 0, 0, 0, 0,
+ 1, 1, 4
+ },
/* unnormalized signed int formats */
{
@@ -1714,22 +1750,26 @@ _mesa_format_to_type_and_comps(gl_format format,
*comps = 3;
return;
case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
+ case MESA_FORMAT_RG_FLOAT32:
*datatype = GL_FLOAT;
*comps = 2;
return;
case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
+ case MESA_FORMAT_RG_FLOAT16:
*datatype = GL_HALF_FLOAT_ARB;
*comps = 2;
return;
case MESA_FORMAT_ALPHA_FLOAT32:
case MESA_FORMAT_LUMINANCE_FLOAT32:
case MESA_FORMAT_INTENSITY_FLOAT32:
+ case MESA_FORMAT_R_FLOAT32:
*datatype = GL_FLOAT;
*comps = 1;
return;
case MESA_FORMAT_ALPHA_FLOAT16:
case MESA_FORMAT_LUMINANCE_FLOAT16:
case MESA_FORMAT_INTENSITY_FLOAT16:
+ case MESA_FORMAT_R_FLOAT16:
*datatype = GL_HALF_FLOAT_ARB;
*comps = 1;
return;
diff --git a/src/mesa/main/formats.h b/src/mesa/main/formats.h
index e0c2acb..15ac62c 100644
--- a/src/mesa/main/formats.h
+++ b/src/mesa/main/formats.h
@@ -142,6 +142,10 @@ typedef enum
MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16,
MESA_FORMAT_INTENSITY_FLOAT32,
MESA_FORMAT_INTENSITY_FLOAT16,
+ MESA_FORMAT_R_FLOAT32,
+ MESA_FORMAT_R_FLOAT16,
+ MESA_FORMAT_RG_FLOAT32,
+ MESA_FORMAT_RG_FLOAT16,
/*@}*/
/**
diff --git a/src/mesa/main/texfetch.c b/src/mesa/main/texfetch.c
index b2181af..5deb11c 100644
--- a/src/mesa/main/texfetch.c
+++ b/src/mesa/main/texfetch.c
@@ -631,6 +631,34 @@ texfetch_funcs[MESA_FORMAT_COUNT] =
fetch_texel_3d_f_intensity_f16,
store_texel_intensity_f16
},
+ {
+ MESA_FORMAT_R_FLOAT32,
+ fetch_texel_1d_f_r_f32,
+ fetch_texel_2d_f_r_f32,
+ fetch_texel_3d_f_r_f32,
+ store_texel_r_f32
+ },
+ {
+ MESA_FORMAT_R_FLOAT16,
+ fetch_texel_1d_f_r_f16,
+ fetch_texel_2d_f_r_f16,
+ fetch_texel_3d_f_r_f16,
+ store_texel_r_f16
+ },
+ {
+ MESA_FORMAT_RG_FLOAT32,
+ fetch_texel_1d_f_rg_f32,
+ fetch_texel_2d_f_rg_f32,
+ fetch_texel_3d_f_rg_f32,
+ store_texel_rg_f32
+ },
+ {
+ MESA_FORMAT_RG_FLOAT16,
+ fetch_texel_1d_f_rg_f16,
+ fetch_texel_2d_f_rg_f16,
+ fetch_texel_3d_f_rg_f16,
+ store_texel_rg_f16
+ },
/* non-normalized, signed int */
{
diff --git a/src/mesa/main/texfetch_tmp.h b/src/mesa/main/texfetch_tmp.h
index f1f6a01..0b9d5da 100644
--- a/src/mesa/main/texfetch_tmp.h
+++ b/src/mesa/main/texfetch_tmp.h
@@ -438,6 +438,110 @@ static void store_texel_intensity_f16(struct gl_texture_image *texImage,
#endif
+/* MESA_FORMAT_R_FLOAT32 *****************************************************/
+
+/* Fetch texel from 1D, 2D or 3D R_FLOAT32 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_r_f32)( const struct gl_texture_image *texImage,
+ GLint i, GLint j, GLint k, GLfloat *texel )
+{
+ const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);
+ texel[RCOMP] = src[0];
+ texel[GCOMP] = 0.0F;
+ texel[BCOMP] = 0.0F;
+ texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_r_f32(struct gl_texture_image *texImage,
+ GLint i, GLint j, GLint k, const void *texel)
+{
+ const GLfloat *rgba = (const GLfloat *) texel;
+ GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 1);
+ dst[0] = rgba[RCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_R_FLOAT16 *****************************************************/
+
+/* Fetch texel from 1D, 2D or 3D R_FLOAT16 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_r_f16)( const struct gl_texture_image *texImage,
+ GLint i, GLint j, GLint k, GLfloat *texel )
+{
+ const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
+ texel[RCOMP] = _mesa_half_to_float(src[0]);
+ texel[GCOMP] = 0.0F;
+ texel[BCOMP] = 0.0F;
+ texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_r_f16(struct gl_texture_image *texImage,
+ GLint i, GLint j, GLint k, const void *texel)
+{
+ const GLfloat *rgba = (const GLfloat *) texel;
+ GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 1);
+ dst[0] = _mesa_float_to_half(rgba[RCOMP]);
+}
+#endif
+
+
+/* MESA_FORMAT_RG_FLOAT32 ****************************************************/
+
+/* Fetch texel from 1D, 2D or 3D RG_FLOAT32 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_rg_f32)( const struct gl_texture_image *texImage,
+ GLint i, GLint j, GLint k, GLfloat *texel )
+{
+ const GLfloat *src = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2);
+ texel[RCOMP] = src[0];
+ texel[GCOMP] = src[1];
+ texel[BCOMP] = 0.0F;
+ texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_rg_f32(struct gl_texture_image *texImage,
+ GLint i, GLint j, GLint k, const void *texel)
+{
+ const GLfloat *rgba = (const GLfloat *) texel;
+ GLfloat *dst = TEXEL_ADDR(GLfloat, texImage, i, j, k, 2);
+ dst[0] = rgba[RCOMP];
+ dst[1] = rgba[GCOMP];
+}
+#endif
+
+
+/* MESA_FORMAT_RG_FLOAT16 ****************************************************/
+
+/* Fetch texel from 1D, 2D or 3D RG_FLOAT16 texture,
+ * returning 4 GLfloats.
+ */
+static void FETCH(f_rg_f16)( const struct gl_texture_image *texImage,
+ GLint i, GLint j, GLint k, GLfloat *texel )
+{
+ const GLhalfARB *src = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 2);
+ texel[RCOMP] = _mesa_half_to_float(src[0]);
+ texel[GCOMP] = _mesa_half_to_float(src[1]);
+ texel[BCOMP] = 0.0F;
+ texel[ACOMP] = 1.0F;
+}
+
+#if DIM == 3
+static void store_texel_rg_f16(struct gl_texture_image *texImage,
+ GLint i, GLint j, GLint k, const void *texel)
+{
+ const GLfloat *rgba = (const GLfloat *) texel;
+ GLhalfARB *dst = TEXEL_ADDR(GLhalfARB, texImage, i, j, k, 2);
+ dst[0] = _mesa_float_to_half(rgba[RCOMP]);
+ dst[1] = _mesa_float_to_half(rgba[GCOMP]);
+}
+#endif
/*
diff --git a/src/mesa/main/texformat.c b/src/mesa/main/texformat.c
index 8b7b4ff..1240245 100644
--- a/src/mesa/main/texformat.c
+++ b/src/mesa/main/texformat.c
@@ -608,6 +608,22 @@ _mesa_choose_tex_format( struct gl_context *ctx, GLint internalFormat,
}
}
+ if (ctx->Extensions.ARB_texture_rg && ctx->Extensions.ARB_texture_float) {
+ switch (internalFormat) {
+ case GL_R16F:
+ return MESA_FORMAT_R_FLOAT16;
+ case GL_R32F:
+ return MESA_FORMAT_R_FLOAT32;
+ case GL_RG16F:
+ return MESA_FORMAT_RG_FLOAT16;
+ case GL_RG32F:
+ return MESA_FORMAT_RG_FLOAT32;
+
+ default:
+ ; /* fallthrough */
+ }
+ }
+
if (ctx->Extensions.EXT_texture_format_BGRA8888) {
switch (internalFormat) {
case GL_BGRA:
diff --git a/src/mesa/main/texstore.c b/src/mesa/main/texstore.c
index eb37490..b9e845d 100644
--- a/src/mesa/main/texstore.c
+++ b/src/mesa/main/texstore.c
@@ -3529,13 +3529,17 @@ _mesa_texstore_rgba_float32(TEXSTORE_PARAMS)
dstFormat == MESA_FORMAT_ALPHA_FLOAT32 ||
dstFormat == MESA_FORMAT_LUMINANCE_FLOAT32 ||
dstFormat == MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32 ||
- dstFormat == MESA_FORMAT_INTENSITY_FLOAT32);
+ dstFormat == MESA_FORMAT_INTENSITY_FLOAT32 ||
+ dstFormat == MESA_FORMAT_R_FLOAT32 ||
+ dstFormat == MESA_FORMAT_RG_FLOAT32);
ASSERT(baseInternalFormat == GL_RGBA ||
baseInternalFormat == GL_RGB ||
baseInternalFormat == GL_ALPHA ||
baseInternalFormat == GL_LUMINANCE ||
baseInternalFormat == GL_LUMINANCE_ALPHA ||
- baseInternalFormat == GL_INTENSITY);
+ baseInternalFormat == GL_INTENSITY ||
+ baseInternalFormat == GL_RED ||
+ baseInternalFormat == GL_RG);
ASSERT(texelBytes == components * sizeof(GLfloat));
if (!ctx->_ImageTransferState &&
@@ -3599,13 +3603,17 @@ _mesa_texstore_rgba_float16(TEXSTORE_PARAMS)
dstFormat == MESA_FORMAT_ALPHA_FLOAT16 ||
dstFormat == MESA_FORMAT_LUMINANCE_FLOAT16 ||
dstFormat == MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16 ||
- dstFormat == MESA_FORMAT_INTENSITY_FLOAT16);
+ dstFormat == MESA_FORMAT_INTENSITY_FLOAT16 ||
+ dstFormat == MESA_FORMAT_R_FLOAT16 ||
+ dstFormat == MESA_FORMAT_RG_FLOAT16);
ASSERT(baseInternalFormat == GL_RGBA ||
baseInternalFormat == GL_RGB ||
baseInternalFormat == GL_ALPHA ||
baseInternalFormat == GL_LUMINANCE ||
baseInternalFormat == GL_LUMINANCE_ALPHA ||
- baseInternalFormat == GL_INTENSITY);
+ baseInternalFormat == GL_INTENSITY ||
+ baseInternalFormat == GL_RED ||
+ baseInternalFormat == GL_RG);
ASSERT(texelBytes == components * sizeof(GLhalfARB));
if (!ctx->_ImageTransferState &&
@@ -4246,6 +4254,10 @@ texstore_funcs[MESA_FORMAT_COUNT] =
{ MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16, _mesa_texstore_rgba_float16 },
{ MESA_FORMAT_INTENSITY_FLOAT32, _mesa_texstore_rgba_float32 },
{ MESA_FORMAT_INTENSITY_FLOAT16, _mesa_texstore_rgba_float16 },
+ { MESA_FORMAT_R_FLOAT32, _mesa_texstore_rgba_float32 },
+ { MESA_FORMAT_R_FLOAT16, _mesa_texstore_rgba_float16 },
+ { MESA_FORMAT_RG_FLOAT32, _mesa_texstore_rgba_float32 },
+ { MESA_FORMAT_RG_FLOAT16, _mesa_texstore_rgba_float16 },
{ MESA_FORMAT_RGBA_INT8, _mesa_texstore_rgba_int8 },
{ MESA_FORMAT_RGBA_INT16, _mesa_texstore_rgba_int16 },
--
1.7.1
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