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Use triangle strips for drawing surfaces.

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This commit is contained in:
Kristian Høgsberg 2008-10-12 12:56:11 -04:00
parent a234e70268
commit 48a33baec7
1 changed files with 4 additions and 4 deletions
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8
egl-compositor.c
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@ -40,7 +40,7 @@ repaint(void *data)
struct wl_surface *surface; struct wl_surface *surface;
struct surface_data *sd; struct surface_data *sd;
GLint vertices[12]; GLint vertices[12];
GLint tex_coords[8] = { 1, 0, 1, 1, 0, 1, 0, 0 }; GLint tex_coords[8] = { 1, 0, 1, 1, 0, 0, 0, 1 };
GLuint indices[4] = { 0, 1, 2, 3 }; GLuint indices[4] = { 0, 1, 2, 3 };
/* This part is where we actually copy the buffer to screen. /* This part is where we actually copy the buffer to screen.
@ -64,11 +64,11 @@ repaint(void *data)
vertices[5] = 0; vertices[5] = 0;
vertices[6] = sd->map.x + sd->map.width; vertices[6] = sd->map.x + sd->map.width;
vertices[7] = sd->map.y + sd->map.height; vertices[7] = sd->map.y;
vertices[8] = 0; vertices[8] = 0;
vertices[9] = sd->map.x + sd->map.width; vertices[9] = sd->map.x + sd->map.width;
vertices[10] = sd->map.y; vertices[10] = sd->map.y + sd->map.height;
vertices[11] = 0; vertices[11] = 0;
glBindTexture(GL_TEXTURE_2D, sd->texture); glBindTexture(GL_TEXTURE_2D, sd->texture);
@ -80,7 +80,7 @@ repaint(void *data)
glEnableClientState(GL_TEXTURE_COORD_ARRAY); glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glVertexPointer(3, GL_INT, 0, vertices); glVertexPointer(3, GL_INT, 0, vertices);
glTexCoordPointer(2, GL_INT, 0, tex_coords); glTexCoordPointer(2, GL_INT, 0, tex_coords);
glDrawElements(GL_QUADS, 4, GL_UNSIGNED_INT, indices); glDrawElements(GL_TRIANGLE_STRIP, 4, GL_UNSIGNED_INT, indices);
} }
wl_surface_iterator_destroy(iterator); wl_surface_iterator_destroy(iterator);