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mesa: Refactor scissor rectangle setting even more

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Create an internal function that just writes data into the scissor
rectangle.  In future patches this will see more use because we only
want to call dd_function_table::Scissor once after setting all of the
scissor rectangles instead of once per scissor rectangle.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Ian Romanick
2013-12-09 11:54:41 -08:00
parent 799265aadc
commit 5232a7ded0
1 changed files with 27 additions and 15 deletions
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42
src/mesa/main/scissor.c
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@@ -29,6 +29,31 @@
#include "main/scissor.h"
/**
* Set scissor rectangle data directly in ScissorArray
*
* This is an internal function that performs no error checking on the
* supplied data. It also does \b not call \c dd_function_table::Scissor.
*
* \sa _mesa_set_scissor
*/
static void
set_scissor_no_notify(struct gl_context *ctx, unsigned idx,
GLint x, GLint y, GLsizei width, GLsizei height)
{
if (x == ctx->Scissor.ScissorArray[idx].X &&
y == ctx->Scissor.ScissorArray[idx].Y &&
width == ctx->Scissor.ScissorArray[idx].Width &&
height == ctx->Scissor.ScissorArray[idx].Height)
return;
FLUSH_VERTICES(ctx, _NEW_SCISSOR);
ctx->Scissor.ScissorArray[idx].X = x;
ctx->Scissor.ScissorArray[idx].Y = y;
ctx->Scissor.ScissorArray[idx].Width = width;
ctx->Scissor.ScissorArray[idx].Height = height;
}
/**
* Called via glScissor
*/
@@ -66,17 +91,7 @@ void
_mesa_set_scissor(struct gl_context *ctx,
GLint x, GLint y, GLsizei width, GLsizei height)
{
if (x == ctx->Scissor.ScissorArray[0].X &&
y == ctx->Scissor.ScissorArray[0].Y &&
width == ctx->Scissor.ScissorArray[0].Width &&
height == ctx->Scissor.ScissorArray[0].Height)
return;
FLUSH_VERTICES(ctx, _NEW_SCISSOR);
ctx->Scissor.ScissorArray[0].X = x;
ctx->Scissor.ScissorArray[0].Y = y;
ctx->Scissor.ScissorArray[0].Width = width;
ctx->Scissor.ScissorArray[0].Height = height;
set_scissor_no_notify(ctx, 0, x, y, width, height);
if (ctx->Driver.Scissor)
ctx->Driver.Scissor(ctx);
@@ -92,8 +107,5 @@ _mesa_init_scissor(struct gl_context *ctx)
{
/* Scissor group */
ctx->Scissor.EnableFlags = GL_FALSE;
ctx->Scissor.ScissorArray[0].X = 0;
ctx->Scissor.ScissorArray[0].Y = 0;
ctx->Scissor.ScissorArray[0].Width = 0;
ctx->Scissor.ScissorArray[0].Height = 0;
set_scissor_no_notify(ctx, 0, 0, 0, 0, 0);
}