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mesa: Add renderbuffer accessors for MESA_FORMAT_R_FLOAT32, RG_FLOAT32.

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Reviewed-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Eric Anholt
2011-04-18 09:17:00 -07:00
parent f7c26109c2
commit bad08969b5
1 changed files with 92 additions and 0 deletions
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92
src/mesa/main/renderbuffer.c
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@@ -1109,6 +1109,78 @@ get_values_rg1616(struct gl_context *ctx, struct gl_renderbuffer *rb,
}
}
/**********************************************************************
* Functions for MESA_FORMAT_R_FLOAT32.
*/
static void
get_row_r_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLuint count, GLint x, GLint y, void *values)
{
const GLfloat *src = rb->GetPointer(ctx, rb, x, y);
GLfloat *dst = values;
GLuint i;
for (i = 0; i < count; i++) {
dst[i * 4 + RCOMP] = src[i];
dst[i * 4 + GCOMP] = 0.0;
dst[i * 4 + BCOMP] = 0.0;
dst[i * 4 + ACOMP] = 1.0;
}
}
static void
get_values_r_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLuint count, const GLint x[], const GLint y[],
void *values)
{
GLfloat *dst = values;
GLuint i;
for (i = 0; i < count; i++) {
const GLfloat *src = rb->GetPointer(ctx, rb, x[i], y[i]);
dst[i * 4 + RCOMP] = src[0];
dst[i * 4 + GCOMP] = 0.0;
dst[i * 4 + BCOMP] = 0.0;
dst[i * 4 + ACOMP] = 1.0;
}
}
/**********************************************************************
* Functions for MESA_FORMAT_RG_FLOAT32.
*/
static void
get_row_rg_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLuint count, GLint x, GLint y, void *values)
{
const GLfloat *src = rb->GetPointer(ctx, rb, x, y);
GLfloat *dst = values;
GLuint i;
for (i = 0; i < count; i++) {
dst[i * 4 + RCOMP] = src[i * 2 + 0];
dst[i * 4 + GCOMP] = src[i * 2 + 1];
dst[i * 4 + BCOMP] = 0.0;
dst[i * 4 + ACOMP] = 1.0;
}
}
static void
get_values_rg_float32(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLuint count, const GLint x[], const GLint y[],
void *values)
{
GLfloat *dst = values;
GLuint i;
for (i = 0; i < count; i++) {
const GLfloat *src = rb->GetPointer(ctx, rb, x[i], y[i]);
dst[i * 4 + RCOMP] = src[0];
dst[i * 4 + GCOMP] = src[1];
dst[i * 4 + BCOMP] = 0.0;
dst[i * 4 + ACOMP] = 1.0;
}
}
/**
* This is the default software fallback for gl_renderbuffer's span
* access functions.
@@ -1265,6 +1337,26 @@ _mesa_set_renderbuffer_accessors(struct gl_renderbuffer *rb)
rb->PutMonoValues = put_mono_values_generic;
break;
case MESA_FORMAT_RG_FLOAT32:
rb->GetRow = get_row_rg_float32;
rb->GetValues = get_values_rg_float32;
rb->PutRow = put_row_generic;
rb->PutRowRGB = NULL;
rb->PutMonoRow = put_mono_row_generic;
rb->PutValues = put_values_generic;
rb->PutMonoValues = put_mono_values_generic;
break;
case MESA_FORMAT_R_FLOAT32:
rb->GetRow = get_row_r_float32;
rb->GetValues = get_values_r_float32;
rb->PutRow = put_row_generic;
rb->PutRowRGB = NULL;
rb->PutMonoRow = put_mono_row_generic;
rb->PutValues = put_values_generic;
rb->PutMonoValues = put_mono_values_generic;
break;
default:
break;
}