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comparison src/video/SDL_renderer_gles.c @ 3536:0267b8b1595c

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Added interfaces for batch drawing of points, lines and rects: SDL_DrawPoints() SDL_BlendPoints() SDL_BlendLines() SDL_DrawLines() SDL_FillRects() SDL_BlendRects() SDL_RenderPoints() SDL_RenderLines() SDL_RenderRects() Renamed SDL_RenderFill() to SDL_RenderRect()
author Sam Lantinga <slouken@libsdl.org>
date Wed, 09 Dec 2009 15:56:56 +0000
parents 83518f8fcd61
children 8b18669c2663
comparison
equal deleted inserted replaced
3535:b403f790df65 3536:0267b8b1595c
83 void **pixels, int *pitch); 83 void **pixels, int *pitch);
84 static void GLES_UnlockTexture(SDL_Renderer * renderer, 84 static void GLES_UnlockTexture(SDL_Renderer * renderer,
85 SDL_Texture * texture); 85 SDL_Texture * texture);
86 static void GLES_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture, 86 static void GLES_DirtyTexture(SDL_Renderer * renderer, SDL_Texture * texture,
87 int numrects, const SDL_Rect * rects); 87 int numrects, const SDL_Rect * rects);
88 static int GLES_RenderPoint(SDL_Renderer * renderer, int x, int y); 88 static int GLES_RenderPoints(SDL_Renderer * renderer, const SDL_Point * points,
89 static int GLES_RenderLine(SDL_Renderer * renderer, int x1, int y1, int x2, 89 int count);
90 int y2); 90 static int GLES_RenderLines(SDL_Renderer * renderer, const SDL_Point * points,
91 static int GLES_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect); 91 int count);
92 static int GLES_RenderRects(SDL_Renderer * renderer, const SDL_Rect ** rects,
93 int count);
92 static int GLES_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture, 94 static int GLES_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
93 const SDL_Rect * srcrect, 95 const SDL_Rect * srcrect,
94 const SDL_Rect * dstrect); 96 const SDL_Rect * dstrect);
95 static void GLES_RenderPresent(SDL_Renderer * renderer); 97 static void GLES_RenderPresent(SDL_Renderer * renderer);
96 static void GLES_DestroyTexture(SDL_Renderer * renderer, 98 static void GLES_DestroyTexture(SDL_Renderer * renderer,
240 renderer->SetTextureScaleMode = GLES_SetTextureScaleMode; 242 renderer->SetTextureScaleMode = GLES_SetTextureScaleMode;
241 renderer->UpdateTexture = GLES_UpdateTexture; 243 renderer->UpdateTexture = GLES_UpdateTexture;
242 renderer->LockTexture = GLES_LockTexture; 244 renderer->LockTexture = GLES_LockTexture;
243 renderer->UnlockTexture = GLES_UnlockTexture; 245 renderer->UnlockTexture = GLES_UnlockTexture;
244 renderer->DirtyTexture = GLES_DirtyTexture; 246 renderer->DirtyTexture = GLES_DirtyTexture;
245 renderer->RenderPoint = GLES_RenderPoint; 247 renderer->RenderPoints = GLES_RenderPoints;
246 renderer->RenderLine = GLES_RenderLine; 248 renderer->RenderLines = GLES_RenderLines;
247 renderer->RenderFill = GLES_RenderFill; 249 renderer->RenderRects = GLES_RenderRects;
248 renderer->RenderCopy = GLES_RenderCopy; 250 renderer->RenderCopy = GLES_RenderCopy;
249 renderer->RenderPresent = GLES_RenderPresent; 251 renderer->RenderPresent = GLES_RenderPresent;
250 renderer->DestroyTexture = GLES_DestroyTexture; 252 renderer->DestroyTexture = GLES_DestroyTexture;
251 renderer->DestroyRenderer = GLES_DestroyRenderer; 253 renderer->DestroyRenderer = GLES_DestroyRenderer;
252 renderer->info = GL_ES_RenderDriver.info; 254 renderer->info = GL_ES_RenderDriver.info;
639 data->blendMode = blendMode; 641 data->blendMode = blendMode;
640 } 642 }
641 } 643 }
642 644
643 static int 645 static int
644 GLES_RenderPoint(SDL_Renderer * renderer, int x, int y) 646 GLES_RenderPoints(SDL_Renderer * renderer, const SDL_Point * points, int count)
645 { 647 {
646 GLES_RenderData *data = (GLES_RenderData *) renderer->driverdata; 648 GLES_RenderData *data = (GLES_RenderData *) renderer->driverdata;
647 649
648 GLES_SetBlendMode(data, renderer->blendMode, 1); 650 GLES_SetBlendMode(data, renderer->blendMode, 1);
649 651
650 data->glColor4f((GLfloat) renderer->r * inv255f, 652 data->glColor4f((GLfloat) renderer->r * inv255f,
651 (GLfloat) renderer->g * inv255f, 653 (GLfloat) renderer->g * inv255f,
652 (GLfloat) renderer->b * inv255f, 654 (GLfloat) renderer->b * inv255f,
653 (GLfloat) renderer->a * inv255f); 655 (GLfloat) renderer->a * inv255f);
654 656
655 GLshort vertices[2]; 657 data->glVertexPointer(2, GL_INT, 0, points);
656 vertices[0] = x;
657 vertices[1] = y;
658
659 data->glVertexPointer(2, GL_SHORT, 0, vertices);
660 data->glEnableClientState(GL_VERTEX_ARRAY); 658 data->glEnableClientState(GL_VERTEX_ARRAY);
661 data->glDrawArrays(GL_POINTS, 0, 1); 659 data->glDrawArrays(GL_POINTS, 0, count);
662 data->glDisableClientState(GL_VERTEX_ARRAY); 660 data->glDisableClientState(GL_VERTEX_ARRAY);
663 661
664 return 0; 662 return 0;
665 } 663 }
666 664
667 static int 665 static int
668 GLES_RenderLine(SDL_Renderer * renderer, int x1, int y1, int x2, int y2) 666 GLES_RenderLines(SDL_Renderer * renderer, const SDL_Point * points, int count)
669 { 667 {
670 GLES_RenderData *data = (GLES_RenderData *) renderer->driverdata; 668 GLES_RenderData *data = (GLES_RenderData *) renderer->driverdata;
671 669
672 GLES_SetBlendMode(data, renderer->blendMode, 1); 670 GLES_SetBlendMode(data, renderer->blendMode, 1);
673 671
674 data->glColor4f((GLfloat) renderer->r * inv255f, 672 data->glColor4f((GLfloat) renderer->r * inv255f,
675 (GLfloat) renderer->g * inv255f, 673 (GLfloat) renderer->g * inv255f,
676 (GLfloat) renderer->b * inv255f, 674 (GLfloat) renderer->b * inv255f,
677 (GLfloat) renderer->a * inv255f); 675 (GLfloat) renderer->a * inv255f);
678 676
679 GLshort vertices[4]; 677 data->glVertexPointer(2, GL_INT, 0, points);
680 vertices[0] = x1;
681 vertices[1] = y1;
682 vertices[2] = x2;
683 vertices[3] = y2;
684
685 data->glVertexPointer(2, GL_SHORT, 0, vertices);
686 data->glEnableClientState(GL_VERTEX_ARRAY); 678 data->glEnableClientState(GL_VERTEX_ARRAY);
687 data->glDrawArrays(GL_LINES, 0, 2); 679 if (count > 2 &&
680 points[0].x == points[count-1].x && points[0].y == points[count-1].y) {
681 /* GL_LINE_LOOP takes care of the final segment */
682 --count;
683 data->glDrawArrays(GL_LINE_LOOP, 0, count);
684 } else {
685 data->glDrawArrays(GL_LINE_STRIP, 0, count);
686 }
688 data->glDisableClientState(GL_VERTEX_ARRAY); 687 data->glDisableClientState(GL_VERTEX_ARRAY);
689 688
690 return 0; 689 return 0;
691 } 690 }
692 691
693 static int 692 static int
694 GLES_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect) 693 GLES_RenderRects(SDL_Renderer * renderer, const SDL_Rect ** rects, int count)
695 { 694 {
696 GLES_RenderData *data = (GLES_RenderData *) renderer->driverdata; 695 GLES_RenderData *data = (GLES_RenderData *) renderer->driverdata;
696 int i;
697 697
698 GLES_SetBlendMode(data, renderer->blendMode, 1); 698 GLES_SetBlendMode(data, renderer->blendMode, 1);
699 699
700 data->glColor4f((GLfloat) renderer->r * inv255f, 700 data->glColor4f((GLfloat) renderer->r * inv255f,
701 (GLfloat) renderer->g * inv255f, 701 (GLfloat) renderer->g * inv255f,
702 (GLfloat) renderer->b * inv255f, 702 (GLfloat) renderer->b * inv255f,
703 (GLfloat) renderer->a * inv255f); 703 (GLfloat) renderer->a * inv255f);
704 704
705 GLshort minx = rect->x;
706 GLshort maxx = rect->x + rect->w;
707 GLshort miny = rect->y;
708 GLshort maxy = rect->y + rect->h;
709
710 GLshort vertices[8];
711 vertices[0] = minx;
712 vertices[1] = miny;
713 vertices[2] = maxx;
714 vertices[3] = miny;
715 vertices[4] = minx;
716 vertices[5] = maxy;
717 vertices[6] = maxx;
718 vertices[7] = maxy;
719
720 data->glVertexPointer(2, GL_SHORT, 0, vertices);
721 data->glEnableClientState(GL_VERTEX_ARRAY); 705 data->glEnableClientState(GL_VERTEX_ARRAY);
722 data->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); 706 for (i = 0; i < count; ++i) {
707 const SDL_Rect *rect = rects[i];
708 GLshort minx = rect->x;
709 GLshort maxx = rect->x + rect->w;
710 GLshort miny = rect->y;
711 GLshort maxy = rect->y + rect->h;
712 GLshort vertices[8];
713 vertices[0] = minx;
714 vertices[1] = miny;
715 vertices[2] = maxx;
716 vertices[3] = miny;
717 vertices[4] = minx;
718 vertices[5] = maxy;
719 vertices[6] = maxx;
720 vertices[7] = maxy;
721
722 data->glVertexPointer(2, GL_SHORT, 0, vertices);
723 data->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
724 }
723 data->glDisableClientState(GL_VERTEX_ARRAY); 725 data->glDisableClientState(GL_VERTEX_ARRAY);
724 726
725 return 0; 727 return 0;
726 } 728 }
727 729