90437330e2
Keith prefers a clean separation between graw applications and implementations, where apps do not link libgallium.a but instead get all functionality they need via graw interface. Although this is not incompatible with late loading of graw drivers, it it would make it very hard to maintain, as wrappers for every utility symbol exposed in graw would have to be written or generated somehow.
116 lines
2.9 KiB
C
116 lines
2.9 KiB
C
/* Display a cleared blue window. This demo has no dependencies on
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* any utility code, just the graw interface and gallium.
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*/
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#include "state_tracker/graw.h"
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#include "pipe/p_screen.h"
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#include "pipe/p_context.h"
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#include "pipe/p_state.h"
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#include "pipe/p_defines.h"
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#include "util/u_debug.h" /* debug_dump_surface_bmp() */
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enum pipe_format formats[] = {
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PIPE_FORMAT_R8G8B8A8_UNORM,
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PIPE_FORMAT_B8G8R8A8_UNORM,
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PIPE_FORMAT_NONE
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};
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static const int WIDTH = 300;
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static const int HEIGHT = 300;
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struct pipe_screen *screen;
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struct pipe_context *ctx;
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struct pipe_surface *surf;
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static void *window = NULL;
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static void draw( void )
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{
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float clear_color[4] = {1,0,1,1};
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ctx->clear(ctx, PIPE_CLEAR_COLOR, clear_color, 0, 0);
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ctx->flush(ctx, PIPE_FLUSH_RENDER_CACHE, NULL);
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#if 0
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/* At the moment, libgraw leaks out/makes available some of the
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* symbols from gallium/auxiliary, including these debug helpers.
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* Will eventually want to bless some of these paths, and lock the
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* others down so they aren't accessible from test programs.
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*
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* This currently just happens to work on debug builds - a release
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* build will probably fail to link here:
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*/
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debug_dump_surface_bmp(ctx, "result.bmp", surf);
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#endif
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screen->flush_frontbuffer(screen, surf, window);
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}
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static void init( void )
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{
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struct pipe_framebuffer_state fb;
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struct pipe_resource *tex, templat;
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int i;
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/* It's hard to say whether window or screen should be created
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* first. Different environments would prefer one or the other.
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*
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* Also, no easy way of querying supported formats if the screen
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* cannot be created first.
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*/
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for (i = 0;
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window == NULL && formats[i] != PIPE_FORMAT_NONE;
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i++) {
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screen = graw_create_window_and_screen(0,0,300,300,
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formats[i],
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&window);
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}
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if (window == NULL)
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exit(2);
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ctx = screen->context_create(screen, NULL);
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if (ctx == NULL)
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exit(3);
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templat.target = PIPE_TEXTURE_2D;
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templat.format = formats[i];
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templat.width0 = WIDTH;
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templat.height0 = HEIGHT;
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templat.depth0 = 1;
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templat.last_level = 0;
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templat.nr_samples = 1;
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templat.bind = (PIPE_BIND_RENDER_TARGET |
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PIPE_BIND_DISPLAY_TARGET);
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tex = screen->resource_create(screen,
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&templat);
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if (tex == NULL)
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exit(4);
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surf = screen->get_tex_surface(screen, tex, 0, 0, 0,
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PIPE_BIND_RENDER_TARGET |
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PIPE_BIND_DISPLAY_TARGET);
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if (surf == NULL)
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exit(5);
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memset(&fb, 0, sizeof fb);
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fb.nr_cbufs = 1;
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fb.width = WIDTH;
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fb.height = HEIGHT;
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fb.cbufs[0] = surf;
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ctx->set_framebuffer_state(ctx, &fb);
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}
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int main( int argc, char *argv[] )
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{
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init();
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graw_set_display_func( draw );
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graw_main_loop();
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return 0;
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}
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