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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4358 | Serge | 1 | |
| 2 | #include "main/colormac.h" |
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| 3 | #include "main/fbobject.h" |
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| 4 | #include "main/macros.h" |
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| 5 | #include "main/teximage.h" |
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| 6 | #include "main/renderbuffer.h" |
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| 7 | #include "swrast/swrast.h" |
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| 8 | #include "swrast/s_context.h" |
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| 9 | #include "swrast/s_texfetch.h" |
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| 10 | |||
| 11 | |||
| 12 | |||
| 13 | * Render-to-texture code for GL_EXT_framebuffer_object |
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| 14 | */ |
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| 15 | |||
| 16 | |||
| 17 | |||
| 18 | delete_texture_wrapper(struct gl_context *ctx, struct gl_renderbuffer *rb) |
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| 19 | { |
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| 20 | ASSERT(rb->RefCount == 0); |
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| 21 | free(rb); |
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| 22 | } |
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| 23 | |||
| 24 | |||
| 25 | * Update the renderbuffer wrapper for rendering to a texture. |
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| 26 | * For example, update the width, height of the RB based on the texture size, |
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| 27 | * update the internal format info, etc. |
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| 28 | */ |
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| 29 | static void |
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| 30 | update_wrapper(struct gl_context *ctx, struct gl_renderbuffer_attachment *att) |
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| 31 | { |
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| 32 | struct gl_renderbuffer *rb = att->Renderbuffer; |
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| 33 | struct swrast_renderbuffer *srb = swrast_renderbuffer(rb); |
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| 34 | struct swrast_texture_image *swImage; |
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| 35 | gl_format format; |
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| 36 | GLuint zOffset; |
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| 37 | |||
| 38 | |||
| 39 | |||
| 40 | |||
| 41 | assert(swImage); |
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| 42 | |||
| 43 | |||
| 44 | |||
| 45 | |||
| 46 | zOffset = 0; |
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| 47 | } |
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| 48 | else { |
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| 49 | zOffset = att->Zoffset; |
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| 50 | } |
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| 51 | |||
| 52 | |||
| 53 | rb->Format = _mesa_get_srgb_format_linear(format); |
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| 54 | |||
| 55 | |||
| 56 | } |
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| 57 | |||
| 58 | |||
| 59 | |||
| 60 | |||
| 61 | * Called when rendering to a texture image begins, or when changing |
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| 62 | * the dest mipmap level, cube face, etc. |
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| 63 | * This is a fallback routine for software render-to-texture. |
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| 64 | * |
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| 65 | * Called via the glRenderbufferTexture1D/2D/3D() functions |
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| 66 | * and elsewhere (such as glTexImage2D). |
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| 67 | * |
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| 68 | * The image we're rendering into is |
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| 69 | * att->Texture->Image[att->CubeMapFace][att->TextureLevel]; |
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| 70 | * It'll never be NULL. |
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| 71 | * |
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| 72 | * \param fb the framebuffer object the texture is being bound to |
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| 73 | * \param att the fb attachment point of the texture |
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| 74 | * |
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| 75 | * \sa _mesa_framebuffer_renderbuffer |
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| 76 | */ |
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| 77 | void |
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| 78 | _swrast_render_texture(struct gl_context *ctx, |
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| 79 | struct gl_framebuffer *fb, |
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| 80 | struct gl_renderbuffer_attachment *att) |
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| 81 | { |
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| 82 | struct gl_renderbuffer *rb = att->Renderbuffer; |
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| 83 | (void) fb; |
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| 84 | |||
| 85 | |||
| 86 | rb->Delete = delete_texture_wrapper; |
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| 87 | |||
| 88 | |||
| 89 | } |
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| 90 | |||
| 91 | |||
| 92 | |||
| 93 | _swrast_finish_render_texture(struct gl_context *ctx, |
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| 94 | struct gl_renderbuffer *rb) |
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| 95 | { |
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| 96 | /* do nothing */ |
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| 97 | /* The renderbuffer texture wrapper will get deleted by the |
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| 98 | * normal mechanism for deleting renderbuffers. |
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| 99 | */ |
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| 100 | (void) ctx; |
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| 101 | (void) rb; |
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| 102 | } |
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| 103 |