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st/mesa: fix crash when DrawBuffer->_ColorDrawBuffers[0] is NULL

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This fixes the game Tiny and Big.
(cherry picked from commit 7942e6a5ae)
This commit is contained in:
Marek Olšák 2011-02-20 16:50:48 +01:00
parent 3ed9054cc5
commit 3a02a2bf25
1 changed files with 10 additions and 6 deletions
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16
src/mesa/state_tracker/st_cb_clear.c
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@ -297,9 +297,11 @@ clear_with_quad(struct gl_context *ctx,
cso_set_fragment_shader_handle(st->cso_context, st->clear.fs);
cso_set_vertex_shader_handle(st->cso_context, st->clear.vs);
st_translate_color(ctx->Color.ClearColor,
ctx->DrawBuffer->_ColorDrawBuffers[0]->_BaseFormat,
clearColor);
if (ctx->DrawBuffer->_ColorDrawBuffers[0]) {
st_translate_color(ctx->Color.ClearColor,
ctx->DrawBuffer->_ColorDrawBuffers[0]->_BaseFormat,
clearColor);
}
/* draw quad matching scissor rect */
draw_quad(st, x0, y0, x1, y1, (GLfloat) ctx->Depth.Clear, clearColor);
@ -551,9 +553,11 @@ st_Clear(struct gl_context *ctx, GLbitfield mask)
ctx->DrawBuffer->Visual.stencilBits == 0))
clear_buffers |= PIPE_CLEAR_DEPTHSTENCIL;
st_translate_color(ctx->Color.ClearColor,
ctx->DrawBuffer->_ColorDrawBuffers[0]->_BaseFormat,
clearColor);
if (ctx->DrawBuffer->_ColorDrawBuffers[0]) {
st_translate_color(ctx->Color.ClearColor,
ctx->DrawBuffer->_ColorDrawBuffers[0]->_BaseFormat,
clearColor);
}
st->pipe->clear(st->pipe, clear_buffers, ctx->Color.ClearColor,
ctx->Depth.Clear, ctx->Stencil.Clear);