SDL_sysrender.h File Reference

#include "../SDL_internal.h"
#include "SDL_render.h"
#include "SDL_events.h"
#include "SDL_mutex.h"
#include "SDL_yuv_sw_c.h"

Include dependency graph for SDL_sysrender.h:

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Go to the source code of this file.

Data Structures
struct	SDL_Texture
struct	SDL_RenderCommand
struct	SDL_AllocVertGap
struct	SDL_Renderer
struct	SDL_RenderDriver

Enumerations
enum	SDL_ScaleMode {   SDL_ScaleModeNearest,   SDL_ScaleModeLinear,   SDL_ScaleModeBest }
enum	SDL_RenderCommandType {   SDL_RENDERCMD_NO_OP,   SDL_RENDERCMD_SETVIEWPORT,   SDL_RENDERCMD_SETCLIPRECT,   SDL_RENDERCMD_SETDRAWCOLOR,   SDL_RENDERCMD_CLEAR,   SDL_RENDERCMD_DRAW_POINTS,   SDL_RENDERCMD_DRAW_LINES,   SDL_RENDERCMD_FILL_RECTS,   SDL_RENDERCMD_COPY,   SDL_RENDERCMD_COPY_EX }

Functions
SDL_BlendFactor	SDL_GetBlendModeSrcColorFactor (SDL_BlendMode blendMode)
SDL_BlendFactor	SDL_GetBlendModeDstColorFactor (SDL_BlendMode blendMode)
SDL_BlendOperation	SDL_GetBlendModeColorOperation (SDL_BlendMode blendMode)
SDL_BlendFactor	SDL_GetBlendModeSrcAlphaFactor (SDL_BlendMode blendMode)
SDL_BlendFactor	SDL_GetBlendModeDstAlphaFactor (SDL_BlendMode blendMode)
SDL_BlendOperation	SDL_GetBlendModeAlphaOperation (SDL_BlendMode blendMode)
void *	SDL_AllocateRenderVertices (SDL_Renderer *renderer, const size_t numbytes, const size_t alignment, size_t *offset)

Variables
SDL_RenderDriver	D3D_RenderDriver
SDL_RenderDriver	D3D11_RenderDriver
SDL_RenderDriver	GL_RenderDriver
SDL_RenderDriver	GLES2_RenderDriver
SDL_RenderDriver	GLES_RenderDriver
SDL_RenderDriver	DirectFB_RenderDriver
SDL_RenderDriver	METAL_RenderDriver
SDL_RenderDriver	PSP_RenderDriver
SDL_RenderDriver	SW_RenderDriver

Enumeration Type Documentation

SDL_RenderCommandType

enum SDL_RenderCommandType

Enumerator
SDL_RENDERCMD_NO_OP
SDL_RENDERCMD_SETVIEWPORT
SDL_RENDERCMD_SETCLIPRECT
SDL_RENDERCMD_SETDRAWCOLOR
SDL_RENDERCMD_CLEAR
SDL_RENDERCMD_DRAW_POINTS
SDL_RENDERCMD_DRAW_LINES
SDL_RENDERCMD_FILL_RECTS
SDL_RENDERCMD_COPY
SDL_RENDERCMD_COPY_EX

Definition at line 72 of file SDL_sysrender.h.

{
    SDL_RENDERCMD_NO_OP,
    SDL_RENDERCMD_SETVIEWPORT,
    SDL_RENDERCMD_SETCLIPRECT,
    SDL_RENDERCMD_SETDRAWCOLOR,
    SDL_RENDERCMD_CLEAR,
    SDL_RENDERCMD_DRAW_POINTS,
    SDL_RENDERCMD_DRAW_LINES,
    SDL_RENDERCMD_FILL_RECTS,
    SDL_RENDERCMD_COPY,
    SDL_RENDERCMD_COPY_EX
} SDL_RenderCommandType;

SDL_ScaleMode

enum SDL_ScaleMode

Enumerator
SDL_ScaleModeNearest
SDL_ScaleModeLinear
SDL_ScaleModeBest

Definition at line 35 of file SDL_sysrender.h.

{
    SDL_ScaleModeNearest,
    SDL_ScaleModeLinear,
    SDL_ScaleModeBest
} SDL_ScaleMode;

Function Documentation

SDL_AllocateRenderVertices()

void* SDL_AllocateRenderVertices	(	SDL_Renderer *	renderer,
		const size_t	numbytes,
		const size_t	alignment,
		size_t *	offset
	)

Definition at line 284 of file SDL_render.c.

References AllocateVertexGap(), SDL_AllocVertGap::len, SDL_AllocVertGap::next, NULL, SDL_AllocVertGap::offset, retval, SDL_assert, SDL_OutOfMemory, SDL_realloc, SDL_Renderer::vertex_data, SDL_Renderer::vertex_data_allocation, SDL_Renderer::vertex_data_gaps, SDL_Renderer::vertex_data_gaps_pool, and SDL_Renderer::vertex_data_used.

Referenced by SW_QueueCopy(), SW_QueueCopyEx(), SW_QueueDrawPoints(), and SW_QueueFillRects().

{
    const size_t needed = renderer->vertex_data_used + numbytes + alignment;
    size_t aligner, aligned;
    void *retval;

    SDL_AllocVertGap *prevgap = &renderer->vertex_data_gaps;
    SDL_AllocVertGap *gap = prevgap->next;
    while (gap) {
        const size_t gapoffset = gap->offset;
        aligner = (alignment && ((gap->offset % alignment) != 0)) ? (alignment - (gap->offset % alignment)) : 0;
        aligned = gapoffset + aligner;

        /* Can we use this gap? */
        if ((aligner < gap->len) && ((gap->len - aligner) >= numbytes)) {
            /* we either finished this gap off, trimmed the left, trimmed the right, or split it into two gaps. */
            if (gap->len == numbytes) {  /* finished it off, remove it */
                SDL_assert(aligned == gapoffset);
                prevgap->next = gap->next;
                gap->next = renderer->vertex_data_gaps_pool;
                renderer->vertex_data_gaps_pool = gap;
            } else if (aligned == gapoffset) {  /* trimmed the left */
                gap->offset += numbytes;
                gap->len -= numbytes;
            } else if (((aligned - gapoffset) + numbytes) == gap->len) {  /* trimmed the right */
                gap->len -= numbytes;
            } else {  /* split into two gaps */
                SDL_AllocVertGap *newgap = AllocateVertexGap(renderer);
                if (!newgap) {
                    return NULL;
                }
                newgap->offset = aligned + numbytes;
                newgap->len = gap->len - (aligner + numbytes);
                newgap->next = gap->next;
                // gap->offset doesn't change.
                gap->len = aligner;
                gap->next = newgap;
            }

            if (offset) {
                *offset = aligned;
            }
            return ((Uint8 *) renderer->vertex_data) + aligned;
        }

        /* Try the next gap */
        prevgap = gap;
        gap = gap->next;
    }

    /* no gaps with enough space; get a new piece of the vertex buffer */
    while (needed > renderer->vertex_data_allocation) {
        const size_t current_allocation = renderer->vertex_data ? renderer->vertex_data_allocation : 1024;
        const size_t newsize = current_allocation * 2;
        void *ptr = SDL_realloc(renderer->vertex_data, newsize);
        if (ptr == NULL) {
            SDL_OutOfMemory();
            return NULL;
        }
        renderer->vertex_data = ptr;
        renderer->vertex_data_allocation = newsize;
    }

    aligner = (alignment && ((renderer->vertex_data_used % alignment) != 0)) ? (alignment - (renderer->vertex_data_used % alignment)) : 0;
    aligned = renderer->vertex_data_used + aligner;

    retval = ((Uint8 *) renderer->vertex_data) + aligned;
    if (offset) {
        *offset = aligned;
    }

    if (aligner) {  /* made a new gap... */
        SDL_AllocVertGap *newgap = AllocateVertexGap(renderer);
        if (newgap) {  /* just let it slide as lost space if malloc fails. */
            newgap->offset = renderer->vertex_data_used;
            newgap->len = aligner;
            newgap->next = NULL;
            prevgap->next = newgap;
        }
    }

    renderer->vertex_data_used += aligner + numbytes;

    return retval;
}

SDL_GetBlendModeAlphaOperation()

SDL_BlendOperation SDL_GetBlendModeAlphaOperation

(

SDL_BlendMode

blendMode

)

Definition at line 3377 of file SDL_render.c.

References SDL_GetLongBlendMode().

{
    blendMode = SDL_GetLongBlendMode(blendMode);
    return (SDL_BlendOperation)(((Uint32)blendMode >> 16) & 0xF);
}

SDL_GetBlendModeColorOperation()

SDL_BlendOperation SDL_GetBlendModeColorOperation

(

SDL_BlendMode

blendMode

)

Definition at line 3356 of file SDL_render.c.

References SDL_GetLongBlendMode().

{
    blendMode = SDL_GetLongBlendMode(blendMode);
    return (SDL_BlendOperation)(((Uint32)blendMode >> 0) & 0xF);
}

SDL_GetBlendModeDstAlphaFactor()

SDL_BlendFactor SDL_GetBlendModeDstAlphaFactor

(

SDL_BlendMode

blendMode

)

Definition at line 3370 of file SDL_render.c.

References SDL_GetLongBlendMode().

{
    blendMode = SDL_GetLongBlendMode(blendMode);
    return (SDL_BlendFactor)(((Uint32)blendMode >> 24) & 0xF);
}

SDL_GetBlendModeDstColorFactor()

SDL_BlendFactor SDL_GetBlendModeDstColorFactor

(

SDL_BlendMode

blendMode

)

Definition at line 3349 of file SDL_render.c.

References SDL_GetLongBlendMode().

{
    blendMode = SDL_GetLongBlendMode(blendMode);
    return (SDL_BlendFactor)(((Uint32)blendMode >> 8) & 0xF);
}

SDL_GetBlendModeSrcAlphaFactor()

SDL_BlendFactor SDL_GetBlendModeSrcAlphaFactor

(

SDL_BlendMode

blendMode

)

Definition at line 3363 of file SDL_render.c.

References SDL_GetLongBlendMode().

{
    blendMode = SDL_GetLongBlendMode(blendMode);
    return (SDL_BlendFactor)(((Uint32)blendMode >> 20) & 0xF);
}

SDL_GetBlendModeSrcColorFactor()

SDL_BlendFactor SDL_GetBlendModeSrcColorFactor

(

SDL_BlendMode

blendMode

)

Definition at line 3342 of file SDL_render.c.

References SDL_GetLongBlendMode().

{
    blendMode = SDL_GetLongBlendMode(blendMode);
    return (SDL_BlendFactor)(((Uint32)blendMode >> 4) & 0xF);
}

Variable Documentation

D3D11_RenderDriver

SDL_RenderDriver D3D11_RenderDriver

D3D_RenderDriver

SDL_RenderDriver D3D_RenderDriver

DirectFB_RenderDriver

SDL_RenderDriver DirectFB_RenderDriver

GL_RenderDriver

SDL_RenderDriver GL_RenderDriver

GLES2_RenderDriver

SDL_RenderDriver GLES2_RenderDriver

GLES_RenderDriver

SDL_RenderDriver GLES_RenderDriver

METAL_RenderDriver

SDL_RenderDriver METAL_RenderDriver

PSP_RenderDriver

SDL_RenderDriver PSP_RenderDriver

SW_RenderDriver

SDL_RenderDriver SW_RenderDriver

Definition at line 866 of file SDL_render_sw.c.

Referenced by SW_CreateRendererForSurface().